Harmful arthropod pesticidal composition

Abstract

To provide a harmful arthropod pesticidal composition capable of obtaining a high lethal effect of harmful arthropod animals in a short time more than ever.SOLUTION: [1] A harmful arthropod pesticidal composition contains one or more selected from the group consisting of a nonionic surfactant (a11) meeting specified requirements and an oily component (a12) (A1), and an ionic surfactant (b1) (B1), where the mass ratio of component (B1) to component (A1) [(B1) / (A1)] is 4 to 30. [2] A harmful arthropod pesticidal composition contains one or more selected from the group consisting of a nonionic surfactant (a21) meeting specified requirements and an oily component (a22) (A2), a nonionic surfactant other than component (a21) (B2), and water, where the mass ratio of component (B2) to component (A2) [(B2) / (A2)] is 4 to 30, the total content of components (A2) and (B2) is 0.15% by mass or more, and component (A2) is in a dissolved state.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an arthropod pest control composition. [Background technology]

[0002] Among arthropods such as insects, various synthetic insecticides such as pyrethroids, organophosphate insecticides, and carbamate insecticides are often used to exterminate sanitary pests such as mosquitoes and mites that transmit various pathogens to humans and livestock, and agricultural and horticultural pests such as thrips, aphids, and scale insects that ravage crops in fields or transmit viruses that become pathogens of crops.

[0003] On the other hand, pesticides for exterminating pests without relying on these synthetic insecticides are known. For example, Patent Document 1 discloses that a transparent pesticide having thixotropy, which contains a pest-controlling component and a hydrophobically modified polyether urethane in a water-based solvent in specific amounts, is easy to spray, can adhere to wall surfaces and the body surfaces of pests for a long time, does not unnecessarily soil the application site, and has excellent spray properties. Patent Document 2 discloses that a bee trap containing as an active ingredient a surfactant with a penetration power of 2000 seconds or less can shorten the time until the captured bee dies. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-234153 [Patent Document 2] Japanese Patent Publication No. 2020-33343 Summary of the Invention [Problem to be solved by the invention]

[0005] The transparent pest control agent described in Patent Document 1 takes 5 minutes to 48 hours to exert its pest control effect, and the bee trap described in Patent Document 2 also takes about 200 seconds to kill the bees. However, the inventors have found that if it takes more than three minutes for the pest to die, the pest may shake its body to shake off the pesticide, and the pesticide will not be killed. The present invention relates to a pest control composition that can achieve a high lethal effect on pests in a shorter period of time. [Means for solving the problem]

[0006] The present inventors have discovered that the above-mentioned problems can be solved by a composition that contains a specific surfactant and one or more components selected from the group consisting of specific nonionic surfactants and oily components in specific proportions, and that satisfies certain requirements.

[0007] That is, the present invention relates to the following. [1] The following components (A1) and (B1): (A1) One or more selected from the group consisting of nonionic surfactants (a11) and oily components (a12), whose solubility X in water at 25°C is 5 g / kg or less, and whose solubility in a 0.05 mass% aqueous sodium lauryl sulfate solution at 25°C is Yg / kg, Y / X is 1.2 or more. (B1) Surfactant containing ionic surfactant (b1) A pest control composition comprising: A composition for controlling arthropod pests, wherein the mass ratio of component (B1) to component (A1) in the composition [(B1) / (A1)] is 4 or more and 30 or less. [2] The following components (A2) and (B2): (A2) one or more selected from the group consisting of nonionic surfactants (a21) and oily components (a22), each having a solubility X in water at 25°C of 5 g / kg or less (B2) Nonionic surfactants other than the component (a21) A pest control composition comprising: the composition further comprises water; the mass ratio of the component (B2) to the component (A2) in the composition [(B2) / (A2)] is 4 or more and 30 or less, the total content of the component (A2) and the component (B2) in the composition is 0.15% by mass or more, A pest arthropod control composition in which the component (A2) is dissolved in the composition. [3] A method for exterminating harmful arthropods, comprising the step of contacting the composition according to [1] or [2] with harmful arthropods. [4] The following components (A1) and (B1): (A1) One or more selected from the group consisting of nonionic surfactants (a11) and oily components (a12), whose solubility X in water at 25°C is 5 g / kg or less, and whose solubility in a 0.05 mass% aqueous sodium lauryl sulfate solution at 25°C is Yg / kg, Y / X is 1.2 or more. (B1) Surfactant containing ionic surfactant (b1) A composition comprising: Use of a composition in which the mass ratio of component (B1) to component (A1) in the composition [(B1) / (A1)] is 4 or more and 30 or less as a composition for controlling harmful arthropods. [5] The following components (A2) and (B2): (A2) one or more selected from the group consisting of nonionic surfactants (a21) and oily components (a22), each having a solubility X in water at 25°C of 5 g / kg or less (B2) Nonionic surfactants other than the component (a21) A composition comprising: the composition further comprises water; the mass ratio of the component (B2) to the component (A2) in the composition [(B2) / (A2)] is 4 or more and 30 or less, the total content of the component (A2) and the component (B2) in the composition is 0.15% by mass or more, Use of the composition in which the component (A2) is dissolved as a composition for controlling arthropod pests. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a pest arthropod control composition that can achieve a high lethal effect on pest arthropods in a shorter period of time. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing a method for evaluating the mosquito knockdown rate in an example. [Figure 2] This is a microscope image of the internal trachea at the junction of the mosquito's head and thorax. [Figure 3] 1 is a microscope image of the internal trachea at the junction of the head and thorax of a mosquito that had been contacted with the composition of Example 3. [Figure 4] 1 is a microscope image of the internal trachea at the junction between the head and thorax of a mosquito that had been in contact with the composition of Comparative Example 1. DETAILED DESCRIPTION OF THE INVENTION

[0010] [Definition] As used herein, the term "arthropod pest control composition" refers to a composition that can prevent and reduce damage caused by arthropod pests by exerting a lethal effect on arthropod pests. Arthropod pests will be described later. As used herein, "control of harmful arthropods" refers to a state in which, after application of a composition to a harmful arthropod, the harmful arthropod becomes unable to move (knocked down), resulting in death after the harmful arthropod becomes slowed down and has difficulty moving. In this specification, the control effect on arthropod pests is evaluated by the knockdown rate after application of the composition to arthropod pests. Specifically, the knockdown rate can be evaluated by the method described in the Examples. The pest arthropod control composition of the present invention includes not only a composition that is applied directly to pest arthropods, but also a composition that is diluted with water or the like before use and then applied to pest arthropods. When the composition is diluted before use, the content of each component in the pest arthropod control composition of the present invention also includes the content of each component in the composition after dilution, i.e., when applied to pest arthropods.

[0011] [Harmful arthropod control composition] The first pest control composition of the present invention (hereinafter also referred to simply as the "composition of the first invention" or "composition (1)") comprises the following components (A1) and (B1): (A1) One or more selected from the group consisting of nonionic surfactants (a11) and oily components (a12), whose solubility X in water at 25°C is 5 g / kg or less, and whose solubility in a 0.05 mass% aqueous sodium lauryl sulfate solution at 25°C is Yg / kg, Y / X is 1.2 or more. (B1) Surfactant containing ionic surfactant (b1) A pest control composition comprising: The mass ratio of the component (B1) to the component (A1) in the composition [(B1) / (A1)] is 4 or more and 30 or less. The second pest control composition of the present invention (hereinafter also referred to simply as the "second invention composition" or "composition (2)") comprises the following components (A2) and (B2): (A2) one or more selected from the group consisting of nonionic surfactants (a21) and oily components (a22), each having a solubility X in water at 25°C of 5 g / kg or less (B2) Nonionic surfactants other than the component (a21) A pest control composition comprising: the composition further comprises water; the mass ratio of the component (B2) to the component (A2) in the composition [(B2) / (A2)] is 4 or more and 30 or less, The total content of the component (A2) and the component (B2) in the composition is 0.15% by mass or more, and the component (A) is dissolved in the composition. The compositions of the first and second inventions of the present invention (hereinafter collectively referred to as "compositions of the present invention") have the above-mentioned constitution, and thus can achieve a high lethal effect on harmful arthropods in a shorter period of time.

[0012] The reason why the composition of the present invention exhibits the above-mentioned effects is not clear, but is thought to be as follows. When the composition of the present invention is brought into contact with harmful arthropods having spiracles, it quickly penetrates into the spiracles and reaches the head, where vital organs of the harmful arthropods are located, inhibiting their function, and it is presumed that this results in a high lethal effect on harmful arthropods in a short period of time. In other words, the composition of the present invention is a composition that can penetrate from the spiracles to the inside of the trachea and further to the head of harmful arthropods. The composition of the present invention contains component (A1) or component (A2) as the main active ingredient for controlling arthropod pests. It is believed that components (A1) and (A2) improve the penetration of the composition from the spiracles to the inside of the trachea of ​​arthropod pests, and further penetrate into the thorax and head, thereby achieving a lethal effect on arthropod pests in a short period of time. However, since components (A1) and (A2) have low solubility in water, the penetration effect of the composition from components (A1) and (A2) into the spiracles and trachea of ​​harmful arthropods may not be fully exerted. Therefore, in the composition of the first invention, a surfactant containing an ionic surfactant (b1) is used as component (B1) in a predetermined ratio, which is thought to improve the solubility of component (A1) in water and effectively exert the effect of the composition penetrating from the spiracles to the inside of the trachea of ​​harmful arthropods. Furthermore, in the composition of the second invention, by using a nonionic surfactant other than component (a21) (i.e., other than component (A2)) as component (B2) in a predetermined proportion and by dissolving component (A2) in the composition, it is believed that the penetration effect of the composition from the spiracles to the inside of the trachea of ​​harmful arthropods can be effectively exerted. It should be noted that component (A1) or component (A2) does not exert its effect simply when it is dissolved, but it is believed that the pest control effect is exerted when it is used in combination with component (B1) and component (B2) in a specific ratio.

[0013] Here, whether or not the composition of the present invention has penetrated into the head of harmful arthropods through the spiracles can be determined by the following method. A dye (Blue No. 1) is added to the composition of the present invention to a concentration of 0.03% by mass to prepare a colored composition. 200 μL of the colored composition is dropped onto the spiracles of a harmful arthropod. This procedure is performed under microscope observation, with the abdomen of the harmful arthropod, which has been previously subjected to low-temperature treatment to put it into a state of suspended animation, fixed to an insect pin using UV-curable resin to restrict movement. If, after 2 minutes, the internal trachea at the junction of the head and thorax of the harmful arthropod is observed under the microscope to be blue, it is determined that the pest arthropod control composition has penetrated into the head of the harmful arthropod.

[0014] The term "harmful arthropods" as used herein refers primarily to arthropods that are harmful to humans, livestock, their living spaces, and agricultural crops or horticultural plants. Examples of arthropods include insects, crustaceans, spiders, centipedes, etc., and are typically insects. From the viewpoint of achieving an extermination effect on harmful arthropods in a short period of time due to the above-mentioned mechanism of action, the harmful arthropods are preferably arthropods having spiracles.

[0015] Specific examples of harmful arthropods include sanitary pests such as mosquitoes, black flies, flies, horseflies, midges, cockroaches, and mites; nuisance pests such as bees, ants, stink bugs, pill bugs, spiders, millipedes, centipedes, and house centipedes; and agricultural pests such as grasshoppers, locusts, planthoppers, moths, thrips, scale insects, cucumber beetles, aphids, and caterpillars. Among these, the composition of the present invention is particularly effective in exterminating mosquitoes, black flies, flies, horseflies, midges, cockroaches, stink bugs, thrips, scale insects, cucumber beetles, and aphids. Note that, although the extermination effect of the composition is evaluated based on the mosquito knockdown rate in this example, the pests that are the target of extermination by the composition of the present invention are not limited to mosquitoes.

[0016] [Composition (1)] The components contained in the composition of the first invention (composition (1)) will be described below. <Ingredient (A1)> Component (A1) is one or more components selected from the group consisting of nonionic surfactants (a11) and oily components (a12), which have a solubility X in water at 25°C of 5 g / kg or less and a Y / X ratio of 1.2 or greater, where Yg / kg is the solubility in a 0.05% by mass aqueous solution of sodium lauryl sulfate at 25°C. Component (A1) acts as the main active ingredient for controlling arthropod pests. The solubility X (g / kg) of component (A1) in water at 25°C is 5 g / kg or less, preferably 4 g / kg or less, more preferably 3.5 g / kg or less, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time, and is also preferably 0.001 g / kg or more, more preferably 0.01 g / kg or more, more preferably 0.03 g / kg or more, more preferably 0.1 g / kg or more. The solubility X (g / kg) of component (A1) in water at 25°C is preferably 0.001 g / kg or more and 5 g / kg or less, more preferably 0.01 g / kg or more and 4 g / kg or less, more preferably 0.03 g / kg or more and 3.5 g / kg or less, and even more preferably 0.1 g / kg or more and 3.5 g / kg or less.

[0017] If the solubility of component (A1) in a 0.05% by mass aqueous solution of sodium lauryl sulfate at 25°C is Y (g / kg), then from the viewpoint of achieving a high lethal effect against arthropod pests in a shorter period of time, Y / X is 1.2 or more, preferably 2 or more, and more preferably 4 or more. There is no particular upper limit, but it is preferably 100 or less, more preferably 50 or less, even more preferably 30 or less, still more preferably 10 or less, and even more preferably 4.5 or less. Y / X is preferably 1.2 or more and 100 or less, more preferably 2 or more and 50 or less, more preferably 2 or more and 30 or less, even more preferably 4 or more and 10 or less, and still more preferably 4 or more and 4.5 or less.

[0018] When the solubility of component (A1) in a 0.05% by mass aqueous solution of sodium lauryl sulfate at 25°C is defined as Y (g / kg), the solubility Y (g / kg) is not particularly limited as long as it satisfies the Y / X ratio of 1.2 or greater. From the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter period of time, the solubility Y (g / kg) is preferably 0.035 g / kg or greater, more preferably 0.05 g / kg or greater, more preferably 0.07 g / kg or greater, even more preferably 0.1 g / kg or greater, still more preferably 0.5 g / kg or greater, and is preferably 100 g / kg or less, more preferably 50 g / kg or less, even more preferably 10 g / kg or less, and still more preferably 5 g / kg or less. The solubility Y (g / kg) is preferably 0.035 g / kg or more and 100 g / kg or less, more preferably 0.05 g / kg or more and 50 g / kg or less, more preferably 0.07 g / kg or more and 10 g / kg or less, even more preferably 0.1 g / kg or more and 10 g / kg or less, and still more preferably 0.5 g / kg or more and 5 g / kg or less.

[0019] The component (A1) is one or more components selected from the group consisting of nonionic surfactants (a11) and oily components (a12). Examples of nonionic surfactants (a11) (hereinafter also referred to as "component (a11)") that are preferably used as component (A1) include polyoxyalkylene alkyl ethers, polyoxyalkylene sorbitan fatty acid esters, alkyl glucosides, alkyl glyceryl ethers, polyglycerin fatty acid esters, polyoxyethylene hydrogenated castor oil, and polyoxyethylene-modified silicones that satisfy the above-mentioned solubility requirements. Among the above, from the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter period of time, component (a11) preferably contains one or more members selected from the group consisting of polyoxyalkylene alkyl ethers and alkyl glyceryl ethers.

[0020] The alkyl group in the polyoxyalkylene alkyl ether preferably has 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, even more preferably 8 to 16 carbon atoms, still more preferably 8 to 14 carbon atoms, and even more preferably 8 to 12 carbon atoms. Furthermore, from the viewpoint of making the solubility X in water at 25°C 5 g / kg or less, the polyoxyalkylene alkyl ether used as component (a11) preferably comprises one or more selected from the group consisting of polyoxyethylene alkyl ethers having an average number of moles of ethylene oxide (EO) added of 3 or less and polyoxypropylene alkyl ethers, and more preferably comprises polyoxypropylene alkyl ethers. The average number of moles of propylene oxide (PO) added in the polyoxypropylene alkyl ether is preferably 1 or more and 20 or less, more preferably 2 or more and 10 or less, and even more preferably 2 or more and 5 or less.

[0021] Specific examples of polyoxypropylene alkyl ethers used as component (a11) include PPG-3 caprylyl ether ("KAO SOFCARE GP-1" manufactured by Kao Corporation).

[0022] The alkyl glyceryl ether used as component (a11) preferably includes an alkyl glyceryl ether having an alkyl group having from 8 to 22 carbon atoms, more preferably from 8 to 18 carbon atoms, even more preferably from 8 to 14 carbon atoms, and even more preferably from 8 to 12 carbon atoms. The alkyl group may be either a linear alkyl group or a branched alkyl group, but from the viewpoint of improving the ease of penetration from the spiracles to the thorax and head of harmful arthropods, a branched alkyl group is preferred. Specific examples of alkyl glyceryl ethers used as component (a11) include octyl glyceryl ether, 2-ethylhexyl glyceryl ether, nonyl glyceryl ether, decyl glyceryl ether, isodecyl glyceryl ether, lauryl glyceryl ether, tridecyl glyceryl ether, myristyl glyceryl ether, stearyl glyceryl ether, isostearyl glyceryl ether, and mixtures of two or more thereof. Among these, the alkyl glyceryl ether preferably includes one or more selected from the group consisting of 2-ethylhexyl glyceryl ether, decyl glyceryl ether, isodecyl glyceryl ether, and lauryl glyceryl ether, and more preferably includes one or more selected from the group consisting of 2-ethylhexyl glyceryl ether and isodecyl glyceryl ether.

[0023] From the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter period of time, component (a11) more preferably comprises one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, and alkyl glyceryl ethers, each having an average number of moles of ethylene oxide (EO) added of 3 or less, even more preferably one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, 2-ethylhexyl glyceryl ethers, and isodecyl glyceryl ethers, each having an average number of moles of ethylene oxide (EO) added of 3 or less, even more preferably one or more selected from the group consisting of polyoxypropylene alkyl ethers, 2-ethylhexyl glyceryl ethers, and isodecyl glyceryl ether, and even more preferably 2-ethylhexyl glyceryl ether.

[0024] The oil component (a12) (hereinafter also referred to as "component (a12)") used as component (A1) includes alcohols, esters, ethers, hydrocarbons, and silicones having 8 or more carbon atoms that satisfy the above-mentioned solubility. Among the above, from the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter time, component (a12) preferably contains one or more selected from the group consisting of alcohols and esters having 8 or more carbon atoms, and more preferably contains alcohols having 8 or more carbon atoms.

[0025] The alcohols having 8 or more carbon atoms used as component (a12) are preferably monohydric or dihydric alcohols having 8 to 22 carbon atoms, more preferably monohydric alcohols having 8 to 22 carbon atoms, even more preferably monohydric alcohols having 8 to 18 carbon atoms, still more preferably monohydric alcohols having 8 to 14 carbon atoms, even more preferably monohydric alcohols having 8 to 12 carbon atoms, and even more preferably monohydric alcohols having 8 to 9 carbon atoms. The alcohols may be straight-chain alcohols, branched-chain alcohols, or cyclic alcohols, but from the viewpoint of improving the ease of penetration from the spiracles to the thorax and head of harmful arthropods, straight-chain or branched-chain alcohols are preferred, and straight-chain alcohols are more preferred. The alcohols may be either saturated or unsaturated alcohols, and are preferably saturated alcohols.

[0026] Specific examples of the alcohols include one or more selected from the group consisting of octyl alcohol, 2-ethylhexanol, nonyl alcohol, isononyl alcohol, decanol, isodecyl alcohol, undecanol, lauryl alcohol, isododecanol, oleyl alcohol, and isostearyl alcohol.

[0027] The component (A1) can be used alone or in combination of two or more. Among the above, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time, component (A1) preferably contains one or more selected from the group consisting of a nonionic surfactant (a11) and alcohols having 8 or more carbon atoms, more preferably one or more selected from the group consisting of polyoxyalkylene alkyl ethers, alkyl glyceryl ethers, and monohydric alcohols having from 8 to 18 carbon atoms, even more preferably one or more selected from the group consisting of polyoxypropylene alkyl ethers, alkyl glyceryl ethers, and monohydric alcohols having from 8 to 12 carbon atoms, still more preferably one or more selected from the group consisting of PPG-3 caprylyl ether, 2-ethylhexyl glyceryl ether, isodecyl glyceryl ether, and octyl alcohol, and even more preferably 2-ethylhexyl glyceryl ether.

[0028] <Ingredient (B1)> Component (B1) is a surfactant containing an ionic surfactant (b1). (ionic surfactant (b1)) In this specification, the ionic surfactant (b1) may be at least one selected from the group consisting of anionic surfactants, cationic surfactants, and amphoteric surfactants.

[0029] [Anionic surfactants] Examples of the anionic surfactant used as component (b1) include sulfate ester-type anionic surfactants such as alkyl or alkenyl sulfates and alkyl or alkenyl ether sulfates; carboxylic acid-type anionic surfactants such as saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates and N-acylamino acid salts; sulfonic acid-type anionic surfactants such as alkyl sulfosuccinates, alkyl sulfonates, α-olefin sulfonates, internal olefin sulfonates, alkyl benzene sulfonates, α-sulfofatty acid methyl ester salts and acyl methyl taurine salts; and phosphate ester-type anionic surfactants such as alkyl phosphates, polyoxyethylene alkyl ether phosphates and polyoxyethylene alkyl phenyl ether phosphates. One or more of these may be used. Among these, from the viewpoints of improving the solubility of component (A1) and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time, the composition preferably contains one or more selected from the group consisting of alkyl or alkenyl sulfates, alkyl or alkenyl ether sulfates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, N-acylamino acid salts, alkyl sulfosuccinates, alkyl sulfonates, α-olefin sulfonates, internal olefin sulfonates, alkylbenzene sulfonates, α-sulfofatty acid methyl ester salts, acyl methyl taurine salts, and alkyl phosphates, more preferably contains one or more selected from the group consisting of alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, saturated or unsaturated fatty acid salts, and alkyl sulfosuccinates, and even more preferably contains one or more selected from the group consisting of alkyl ether sulfates, alkyl sulfates, saturated fatty acid salts, and alkyl sulfosuccinates.

[0030] The alkyl or alkenyl group and fatty acid in the anionic surfactant preferably have from 8 to 22 carbon atoms, more preferably from 8 to 18 carbon atoms, even more preferably from 8 to 14 carbon atoms, and still more preferably from 8 to 12 carbon atoms, from the viewpoint of improving the solubility of component (A1) and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing their death in a short period of time.

[0031] Counter ions of the anionic groups of the anionic surfactants include alkali metal ions such as sodium ion and potassium ion; alkaline earth metal ions such as calcium ion and magnesium ion; ammonium ion; and alkanolammonium having 1 to 3 alkanol groups having 2 or 3 carbon atoms (for example, monoethanolammonium, diethanolammonium, triethanolammonium, triisopropanolammonium, etc.).

[0032] Among the preferred anionic surfactants used as component (b1), alkyl ether sulfates include sodium polyoxyethylene lauryl ether sulfates such as sodium laureth sulfate, and alkyl sulfates include sodium lauryl sulfate and ammonium lauryl sulfate. Examples of saturated fatty acid salts include sodium laurate. Examples of alkyl sulfosuccinates include monoalkyl sulfosuccinates and dialkyl sulfosuccinates, and preferably dialkyl sulfosuccinates, and specific examples thereof include dioctyl sodium sulfosuccinate. Among the above, from the viewpoint of improving the solubility of component (A1) and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time, the anionic surfactant used as component (b1) preferably contains one or more selected from the group consisting of polyoxyethylene lauryl ether sodium sulfate, sodium lauryl sulfate, sodium laurate, and dioctyl sodium sulfosuccinate, and more preferably contains dioctyl sodium sulfosuccinate.

[0033] [Cationic surfactant] Examples of cationic surfactants used as component (b1) include quaternary ammonium salt-type cationic surfactants such as alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylamidoalkyltrimethylammonium salts, alkylbenzyldimethylammonium salts, and alkylpyridinium salts; and amine salt-type cationic surfactants such as alkyldimethylamines and salts thereof, alkoxyalkyldimethylamines and salts thereof, alkylamidoalkyldimethylamines and salts thereof, diethanolamine monoalkyl esters and salts thereof, triethanolamine monoalkyl esters and salts thereof, and triethanolamine dialkyl esters and salts thereof, and one or more of these may be used.

[0034] The alkyl group in the alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylbenzyldimethylammonium salts, alkylpyridinium salts, alkyldimethylamines and their salts, and alkoxyalkyldimethylamines and their salts preferably has from 8 to 22 carbon atoms, more preferably from 8 to 18 carbon atoms, from the viewpoint of improving the solubility of component (A1) and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time. The alkyl group in the alkylamidoalkyltrimethylammonium salt, alkylamidoalkyldimethylamine and its salt, diethanolamine monoalkyl ester and its salt, triethanolamine monoalkyl ester and its salt, and triethanolamine dialkyl ester and its salt preferably has 7 to 21 carbon atoms, more preferably 7 to 17 carbon atoms, from the viewpoint of improving the solubility of component (A1) and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time.

[0035] Counter ions of the cationic group in the alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylamidoalkyltrimethylammonium salts, alkylbenzyldimethylammonium salts, and alkylpyridinium salts include alkyl sulfate ions having 1 to 3 carbon atoms, sulfate ions, phosphate ions, carboxylate ions having 1 to 3 carbon atoms (formate ions, acetate ions, propionate ions), and halide ions such as chloride ions and bromide ions. Among these, from the viewpoints of ease of production and ease of availability of raw materials, halide ions are preferred, and chloride ions are more preferred.

[0036] Alkyl dimethylamines, alkoxy alkyl dimethyl amines, alkyl amido alkyl dimethyl amines, diethanolamine monoalkyl esters, triethanolamine monoalkyl esters, and triethanolamine dialkyl esters may be reacted with an acid in advance to form a salt and then incorporated into the composition, or they may be incorporated directly into the composition and then an acid is added to the composition to form a salt therein. Therefore, the above amines, alkyl esters, and their salts are defined herein as cationic surfactants. The content is calculated in terms of the mass of the above amines and alkyl esters. Examples of salts of alkyldimethylamines, alkoxyalkyldimethylamines, alkylamidoalkyldimethylamines, diethanolamine monoalkyl esters, triethanolamine monoalkyl esters, and triethanolamine dialkyl esters include salts with organic acids or inorganic acids. Examples of organic acids include monocarboxylic acids such as acetic acid and propionic acid; dicarboxylic acids such as malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, and phthalic acid; polycarboxylic acids such as polyglutamic acid; hydroxycarboxylic acids such as glycolic acid, lactic acid, hydroxyacrylic acid, glyceric acid, malic acid, tartaric acid, and citric acid; and acidic amino acids such as glutamic acid and aspartic acid. Examples of inorganic acids include hydrochloric acid, sulfuric acid, and phosphoric acid.

[0037] Among the above, from the viewpoint of improving the solubility of component (A1) and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time, the cationic surfactant preferably includes one or more selected from the group consisting of alkyltrimethylammonium salts such as cetyltrimethylammonium chloride; alkoxyalkyltrimethylammonium salts such as stearoxypropyltrimethylammonium chloride; dialkyldimethylammonium salts such as distearyldimethylammonium chloride; alkylamidoalkyltrimethylammonium salts such as palmitamidopropyltrimethylammonium chloride; and alkylbenzyldimethylammonium salts such as benzalkonium chloride, and more preferably includes alkylbenzyldimethylammonium salts. Furthermore, among the above, from the viewpoint of improving the solubility of component (A1) and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time, the cationic surfactant preferably includes one or more selected from the group consisting of cetyltrimethylammonium chloride, stearoxypropyltrimethylammonium chloride, distearyldimethylammonium chloride, palmitamidopropyltrimethylammonium chloride, and benzalkonium chloride, and more preferably includes benzalkonium chloride.

[0038] [Amphoteric surfactants] Examples of the amphoteric surfactants used as component (b1) include amine oxide amphoteric surfactants such as alkyldimethylamine oxide and amidopropyldimethylamine oxide; carboxybetaine amphoteric surfactants such as alkyldimethylaminoacetic acid betaine and fatty acid amidopropyl betaine; N-alkyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, alkyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine, N-alkanoylaminopropyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine, and N-alkanoylaminopropyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine. alkyl sulfobetaine or alkylamidohydroxysulfobetaine amphoteric surfactants such as 2-alkyl-N-carboxymethylimidazolinium betaine and 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine; 2-alkylimidazoline amphoteric surfactants such as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine; and amino acid amphoteric surfactants such as N-alkyl-β-aminopropionic acid and salts thereof, and alkyl (or dialkyl)diethylenetriaminoacetic acid and salts thereof, and one or more of these may be used.

[0039] Among the above, from the viewpoint of improving the solubility of component (A1) and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time, the amphoteric surfactant preferably includes one or more selected from the group consisting of amine oxide-type amphoteric surfactants and carboxybetaine-type amphoteric surfactants, and more preferably includes one or more selected from the group consisting of alkyldimethylamine oxides and fatty acid amidopropyl betaines. The alkyl group in the alkyldimethylamine oxide preferably has 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, even more preferably 8 to 14 carbon atoms, and still more preferably 8 to 12 carbon atoms, from the viewpoints of improving the solubility of component (A1) and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time. Specific examples of alkyl dimethyl amine oxide include one or more selected from the group consisting of lauryl dimethyl amine oxide, myristyl dimethyl amine oxide, and coco alkyl dimethyl amine oxide, and preferably includes lauryl dimethyl amine oxide. The fatty acid in the fatty acid amidopropyl betaine is preferably a saturated fatty acid having 8 to 16 carbon atoms, more preferably 8 to 14 carbon atoms, and even more preferably 8 to 12 carbon atoms. The fatty acid amidopropyl betaine preferably includes lauric acid amidopropyl betaine.

[0040] The component (b1) can be used alone or in combination of two or more. Among the above, from the viewpoint of improving the solubility of component (A1) and promoting penetration of the composition from the spiracles to the inside of the trachea and further to the thorax and head of harmful arthropods, thereby causing death in a short period of time, component (b1) preferably contains one or more selected from the group consisting of cationic surfactants and amphoteric surfactants, or is selected from the group consisting of alkyl or alkenyl groups and alkyl or alkenyl sulfates, alkyl or alkenyl ether sulfates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, N-acylamino acid salts, alkyl sulfosuccinates, alkyl sulfonates, α-olefin sulfonates, internal olefin sulfonates, alkylbenzene sulfonates, α-sulfofatty acid methyl ester salts ... The surfactants contain one or more anionic surfactants selected from the group consisting of alkyl methyl taurine salts and alkyl phosphates, more preferably one or more selected from the group consisting of alkyl ether sulfates, alkyl sulfates, saturated fatty acid salts, sulfosuccinate alkyl ester salts, benzalkonium chloride, alkyl dimethylamine oxide, and fatty acid amidopropyl betaine, in which the alkyl group or fatty acid has from 8 to 22 carbon atoms, and even more preferably one or more selected from the group consisting of polyoxyethylene lauryl ether sodium sulfate, sodium lauryl sulfate, sodium laurate, dioctyl sodium sulfosuccinate, benzalkonium chloride, lauryl dimethylamine oxide, and lauric acid amidopropyl betaine.

[0041] Component (B1) may contain a surfactant other than component (b1) to the extent that the effects of the present invention are not impaired. However, the content of component (b1) in component (B1) is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, still more preferably 80% by mass or more, even more preferably 90% by mass or more, and still more preferably 95% by mass or more, but not more than 100% by mass.

[0042] The mass ratio of component (B1) to component (A1) in the composition of the first invention [(B1) / (A1)] is from 4 to 30, preferably from 4 to 25, more preferably from 4 to 20, even more preferably from 4 to 15, still more preferably from 4 to 12, and even more preferably from 4 to 10, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time.

[0043] From the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter time, the content of component (A1) in the composition of the first invention is preferably 0.001% by mass or more, more preferably 0.002% by mass or more, even more preferably 0.003% by mass or more, still more preferably 0.005% by mass or more, still more preferably 0.01% by mass or more, still more preferably 0.02% by mass or more, still more preferably 0.04% by mass or more, still more preferably 0.06% by mass or more, and still more preferably 0.07% by mass or more. Furthermore, from the viewpoint of improving the solubility of component (A1) in the composition, promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, resulting in death in a short period of time, and from the viewpoint of the appearance of the residue after drying, the content is preferably 10% by mass or less, more preferably 8% by mass or less, even more preferably 6% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less, even more preferably 1.5% by mass or less, even more preferably 1.2% by mass or less, even more preferably 1% by mass or less, even more preferably 0.8% by mass or less, even more preferably 0.6% by mass or less, even more preferably 0.5% by mass or less, even more preferably 0.4% by mass or less, even more preferably 0.3% by mass or less, and even more preferably 0.2% by mass or less. The content of component (A1) in the composition of the first invention is preferably 0.001% by mass or more and 10% by mass or less, more preferably 0.002% by mass or more and 8% by mass or less, even more preferably 0.003% by mass or more and 6% by mass or less, even more preferably 0.005% by mass or more and 5% by mass or less, even more preferably 0.01% by mass or more and 3% by mass or less, even more preferably 0.02% by mass or more and 2% by mass or less, even more preferably 0.02% by mass or more and 1.5% by mass or less, and even more preferably The content is 0.04% by mass or more and 1.2% by mass or less, even more preferably 0.04% by mass or more and 1% by mass or less, even more preferably 0.04% by mass or more and 0.8% by mass or less, even more preferably 0.06% by mass or more and 0.6% by mass or less, even more preferably 0.06% by mass or more and 0.5% by mass or less, even more preferably 0.07% by mass or more and 0.4% by mass or less, even more preferably 0.07% by mass or more and 0.3% by mass or less, and even more preferably 0.07% by mass or more and 0.2% by mass or less.

[0044] When the composition of the first invention contains the component (a11), the content of component (a11) in the composition of the first invention is, from the viewpoint of obtaining a high lethal effect against harmful arthropods in a shorter time, preferably 0.001% by mass or more, more preferably 0.002% by mass or more, even more preferably 0.003% by mass or more, still more preferably 0.005% by mass or more, still more preferably 0.01% by mass or more, still more preferably 0.02% by mass or more, still more preferably 0.04% by mass or more, still more preferably 0.05% by mass or more, still more preferably 0.07% by mass or more, and still more preferably 0.08% by mass or more. Furthermore, from the viewpoint of improving the solubility of component (a11) in the composition and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time, the concentration is preferably 10% by mass or less, more preferably 8% by mass or less, even more preferably 6% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less, even more preferably 1.5% by mass or less, even more preferably 1.2% by mass or less, even more preferably 1% by mass or less, even more preferably 0.8% by mass or less, even more preferably 0.6% by mass or less, even more preferably 0.5% by mass or less, even more preferably 0.4% by mass or less, even more preferably 0.3% by mass or less, and even more preferably 0.2% by mass or less. The content of component (a11) in the composition of the first invention is preferably 0.001% by mass or more and 10% by mass or less, more preferably 0.002% by mass or more and 8% by mass or less, even more preferably 0.003% by mass or more and 6% by mass or less, even more preferably 0.005% by mass or more and 5% by mass or less, even more preferably 0.01% by mass or more and 3% by mass or less, even more preferably 0.02% by mass or more and 2% by mass or less, even more preferably 0.02% by mass or more and 1.5% by mass or less, and even more preferably The content is 0.04% by mass or more and 1.2% by mass or less, even more preferably 0.04% by mass or more and 1% by mass or less, even more preferably 0.05% by mass or more and 0.8% by mass or less, even more preferably 0.05% by mass or more and 0.6% by mass or less, even more preferably 0.07% by mass or more and 0.5% by mass or less, even more preferably 0.07% by mass or more and 0.4% by mass or less, even more preferably 0.07% by mass or more and 0.3% by mass or less, and even more preferably 0.08% by mass or more and 0.2% by mass or less.

[0045] The content of component (B1) in the composition of the first invention is preferably 0.004% by mass or more, more preferably 0.008% by mass or more, even more preferably 0.01% by mass or more, still more preferably 0.02% by mass or more, still more preferably 0.04% by mass or more, still more preferably 0.08% by mass or more, still more preferably 0.1% by mass or more, still more preferably 0.2% by mass or more, and still more preferably 0.24% by mass or more, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time. Furthermore, from the viewpoint of improving the solubility of component (B1) in the composition and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, resulting in their death in a short period of time, the content is preferably 30% by mass or less, more preferably 20% by mass or less, still more preferably 10% by mass or less, still more preferably 5% by mass or less, still more preferably 3% by mass or less, still more preferably 2% by mass or less, still more preferably 1.5% by mass or less, and still more preferably 1% by mass or less. The content of component (B1) in the composition of the first invention is preferably 0.004% by mass or more and 30% by mass or less, more preferably 0.008% by mass or more and 20% by mass or less, even more preferably 0.01% by mass or more and 10% by mass or less, still more preferably 0.02% by mass or more and 5% by mass or less, still more preferably 0.04% by mass or more and 3% by mass or less, still more preferably 0.08% by mass or more and 2% by mass or less, still more preferably 0.1% by mass or more and 1.5% by mass or less, still more preferably 0.2% by mass or more and 1% by mass or less, and still more preferably 0.24% by mass or more and 1% by mass or less.

[0046] From the viewpoint of improving the effect of obtaining a high lethal effect against harmful arthropods in a short time, the content of component (b1) in the composition of the first invention is preferably 0.004% by mass or more, more preferably 0.008% by mass or more, even more preferably 0.01% by mass or more, still more preferably 0.02% by mass or more, still more preferably 0.04% by mass or more, still more preferably 0.08% by mass or more, still more preferably 0.1% by mass or more, and still more preferably 0.2% by mass or more. Also, from the viewpoint of improving the solubility of component (b1) in the composition and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, resulting in their death in a short time, the content is preferably 30% by mass or less, more preferably 20% by mass or less, still more preferably 10% by mass or less, still more preferably 5% by mass or less, still more preferably 3% by mass or less, still more preferably 2% by mass or less, still more preferably 1.5% by mass or less, still more preferably 1% by mass or less, still more preferably 0.8% by mass or less, and still more preferably 0.6% by mass or less. The content of component (b1) in the composition of the first invention is preferably 0.004% by mass or more and 30% by mass or less, more preferably 0.008% by mass or more and 20% by mass or less, even more preferably 0.01% by mass or more and 10% by mass or less, even more preferably 0.02% by mass or more and 5% by mass or less, even more preferably 0.04% by mass or more and 3% by mass or less, even more preferably 0.04% by mass or more and 2% by mass or less, even more preferably 0.08% by mass or more and 1.5% by mass or less, even more preferably 0.08% by mass or more and 1% by mass or less, even more preferably 0.1% by mass or more and 0.8% by mass or less, and even more preferably 0.2% by mass or more and 0.6% by mass or less.

[0047] From the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter period of time, the total content of component (A1) and component (B1) in the composition of the first invention is preferably 0.005% by mass or more, even more preferably 0.01% by mass or more, even more preferably 0.02% by mass or more, even more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, even more preferably 0.25% by mass or more, even more preferably 0.3% by mass or more, even more preferably 0.32% by mass or more, even more preferably 0.36% by mass or more, and even more preferably 0.4% by mass or more. Furthermore, from the viewpoint of improving the solubility of component (A1) in the composition and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time, the concentration is preferably 40% by mass or less, more preferably 30% by mass or less, even more preferably 20% by mass or less, even more preferably 10% by mass or less, even more preferably 5% by mass or less, even more preferably 2% by mass or less, even more preferably 1.5% by mass or less, even more preferably 1.2% by mass or less, and even more preferably 1% by mass or less. The total content of component (A1) and component (B1) in the composition of the first invention is preferably 0.005% by mass or more and 40% by mass or less, even more preferably 0.01% by mass or more and 30% by mass or less, even more preferably 0.02% by mass or more and 20% by mass or less, even more preferably 0.05% by mass or more and 10% by mass or less, even more preferably 0.1% by mass or more and 5% by mass or less, even more preferably 0.2% by mass or more and 2% by mass or less, even more preferably 0.25% by mass or more and 1.5% by mass or less, even more preferably 0.3% by mass or more and 1.2% by mass or less, even more preferably 0.32% by mass or more and 1.2% by mass or less, even more preferably 0.36% by mass or more and 1% by mass or less, and even more preferably 0.4% by mass or more and 1% by mass or less.

[0048] <Component (C1): Alcohol with 4 or fewer carbon atoms> The composition of the first invention may further contain, as component (C1), an alcohol having 4 or less carbon atoms, for the purpose of further improving the solubility of component (A1) in the composition. Component (C1) is preferably a monohydric or dihydric alcohol, specific examples of which include methanol, ethanol, isopropyl alcohol, butyl alcohol, and propylene glycol, and one or more of these may be used. Among the above, from the viewpoint of improving the solubility of component (A1) in the composition and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time, component (C1) preferably contains one or more selected from the group consisting of ethanol and isopropyl alcohol, and more preferably contains ethanol.

[0049] When the composition of the first invention contains component (C1), the content of component (C1) in the composition of the first invention is, from the viewpoints of improving the solubility of component (A1) in the composition and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time, preferably 1% by mass or more, more preferably 3% by mass or more, even more preferably 5% by mass or more, and is preferably 80% by mass or less, more preferably 60% by mass or less, even more preferably 40% by mass or less, still more preferably 20% by mass or less, and even more preferably 10% by mass or less. The content of component (C1) in the composition of the first invention is preferably from 1 to 80% by mass, more preferably from 3 to 60% by mass, even more preferably from 5 to 40% by mass, still more preferably from 5 to 20% by mass, and even more preferably from 5 to 10% by mass. The composition of the first invention may not contain component (C1); for example, the content of component (C1) in the composition of the first invention may be less than 1 mass%, preferably less than 0.5 mass%, more preferably less than 0.1 mass%, and even more preferably 0 mass%.

[0050] The mass ratio of component (C1) to component (A1) in the composition of the first invention [(C1) / (A1)] is preferably 5 or more and 500 or less, more preferably 10 or more and 300 or less, even more preferably 30 or more and 200 or less, and still more preferably 60 or more and 100 or less, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time.

[0051] The ratio of the total content of component (B1) and component (C1) to the mass of component (A1) in the composition of the first invention [((B1) + (C1)) / (A1)] is preferably 5 or more and 500 or less, more preferably 10 or more and 300 or less, even more preferably 30 or more and 200 or less, and still more preferably 60 or more and 100 or less, from the viewpoint of obtaining a high lethal effect against harmful arthropods in a short period of time.

[0052] <Ingredient (D): Fragrance> The composition of the first invention may further contain a fragrance as component (D). Component (D) may be amyl butyrate, isoeugenol, isopulegol, isomenthone, ethyl vanillin, eugenol, eugenol acetate, ocimene, capric acid, caryophyllene, carvacrol, carvone, camphor, camphene, cinnamic acid, ethyl cinnamate, geraniol, geranyl acetate, germacrene, methyl salicylate, citral, citronellal, citronellol, 1,8-cineole (eucalyptol), dillapiole, cinnamyl acetate, cinnamyl alcohol, cinnamyl aldehyde, cymene, cedrene, cedrol, tamarind, cinnamyl aldehyde ... Examples of the hydroxybenzoates include one or more selected from the group consisting of melon, thymol, thujopsene, tetrahydrolinalool, terpineol, terpinen-4-ol, terpinene, butyl lactate, nepetalactone, neral, nerol, vanillin, pinene, piperonal, piperonyl alcohol, phenandrene, 2-phenylethylpropionate, pulegone, heliotropin, verbenone, benzyl acetate, benzyl alcohol, benzyl benzoate, bornyl acetate, myrcene, p-menthane-3,8-diol, menthol, menthone, linalool, and limonene. When the composition of the first invention contains component (D), the content of component (D) in the composition is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, even more preferably 0.01% by mass or more, and is preferably 3% by mass or less, more preferably 2% by mass or less, even more preferably 1% by mass or less.

[0053] <Water> The composition of the first invention preferably further contains water. The water used in the present invention is not particularly limited, and examples thereof include ion-exchanged water, pure water, and distilled water. When the composition of the first invention contains water, the content of water in the composition of the first invention is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, still more preferably 80% by mass or more, still more preferably 85% by mass or more, still more preferably 90% by mass or more, still more preferably 95% by mass or more, and preferably 99.8% by mass or less, more preferably 99.7% by mass or less. The water content in the composition of the first invention is preferably 50% by mass or more and 99.8% by mass or less, more preferably 60% by mass or more and 99.8% by mass or less, even more preferably 70% by mass or more and 99.8% by mass or less, still more preferably 80% by mass or more and 99.7% by mass or less, even more preferably 85% by mass or more and 99.7% by mass or less, still more preferably 90% by mass or more and 99.7% by mass or less, and still more preferably 95% by mass or more and 99.7% by mass or less. The content of water in the composition of the first invention may be the balance of component (A1) and component (B1).

[0054] <Other ingredients> The composition of the first invention may contain, in addition to the above components, for example, a thickener, a preservative, a colorant, a pH adjuster, etc., within the scope of not impairing the effects of the invention. However, the content of components other than component (A1), component (B1), component (C1) and water in the composition of the first invention is preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 10% by mass or less, still more preferably 5% by mass or less, still more preferably 1% by mass or less, still more preferably 0.5% by mass or less, and still more preferably 0.1% by mass or less.

[0055] The method for producing the composition of the first invention is not particularly limited, and it can be produced, for example, by blending the components (A1) and (B1) and other components used as needed, and mixing them using a known stirring device or the like.

[0056] [Composition (2)] The components contained in the composition of the second invention (composition (2)) will be described below. <Ingredient (A2)> Component (A2) is one or more components selected from the group consisting of nonionic surfactants (a21) and oily components (a22), each of which has a solubility X in water at 25°C of 5 g / kg or less. Component (A2) acts as the main active ingredient for controlling arthropod pests. The solubility X (g / kg) of component (A2) in water at 25°C is 5 g / kg or less, preferably 4 g / kg or less, more preferably 3.5 g / kg or less, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time, and is preferably 0.001 g / kg or more, more preferably 0.01 g / kg or more, and even more preferably 0.1 g / kg or more. The solubility X (g / kg) of component (A2) in water at 25°C is preferably 0.001 g / kg or more and 5 g / kg or less, more preferably 0.01 g / kg or more and 4 g / kg or less, and more preferably 0.1 g / kg or more and 3.5 g / kg or less.

[0057] The component (A2) is one or more components selected from the group consisting of nonionic surfactants (a21) and oily components (a22). Nonionic surfactants (a21) (hereinafter also referred to as "component (a21)") preferably used as component (A2) include the same compounds as those exemplified as component (a11) above. That is, component (a21) preferably contains one or more members selected from the group consisting of polyoxyalkylene alkyl ethers and alkyl glyceryl ethers.

[0058] From the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter period of time, component (a21) more preferably comprises one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, and alkyl glyceryl ethers, each having an average number of moles of ethylene oxide (EO) added of 3 or less, even more preferably one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, 2-ethylhexyl glyceryl ethers, and isodecyl glyceryl ethers, each having an average number of moles of ethylene oxide (EO) added of 3 or less, even more preferably one or more selected from the group consisting of polyoxypropylene alkyl ethers, 2-ethylhexyl glyceryl ethers, and isodecyl glyceryl ether, and even more preferably 2-ethylhexyl glyceryl ether.

[0059] The oil component (a22) (hereinafter also referred to as "component (a22)") used as component (A2) includes the same compounds as those exemplified as component (a12) above. That is, component (a22) preferably contains one or more selected from the group consisting of alcohols and esters having 8 or more carbon atoms, and more preferably contains an alcohol having 8 or more carbon atoms. Specific examples of the alcohols include one or more selected from the group consisting of octyl alcohol, 2-ethylhexanol, nonyl alcohol, isononyl alcohol, decanol, isodecyl alcohol, undecanol, lauryl alcohol, isododecanol, oleyl alcohol, and isostearyl alcohol, and even more preferred are monohydric alcohols having 8 to 9 carbon atoms, i.e., one or more selected from the group consisting of octyl alcohol, 2-ethylhexanol, and nonyl alcohol.

[0060] The component (A2) can be used alone or in combination of two or more. Among the above, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time, component (A2) preferably comprises one or more selected from the group consisting of nonionic surfactants (a21) and alcohols (a22) having 8 or more carbon atoms, more preferably one or more selected from the group consisting of polyoxyalkylene alkyl ethers, alkyl glyceryl ethers, and monohydric alcohols having from 8 to 18 carbon atoms, even more preferably one or more selected from the group consisting of polyoxypropylene alkyl ethers, alkyl glyceryl ethers, and monohydric alcohols having from 8 to 12 carbon atoms, even more preferably one or more selected from the group consisting of PPG-3 caprylyl ether, 2-ethylhexyl glyceryl ether, isodecyl glyceryl ether, and octyl alcohol, even more preferably 2-ethylhexyl glyceryl ether, and even more preferably one or more selected from the group consisting of PPG-3 caprylyl ether, 2-ethylhexyl glyceryl ether, and isodecyl glyceryl ether from the viewpoint of storage stability and odor.

[0061] <Ingredient (B2)> Component (B2) is a nonionic surfactant other than the aforementioned component (a21). That is, component (B2) is preferably a nonionic surfactant having a solubility X in water at 25°C of more than 5 g / kg. The nonionic surfactant used as component (B2) preferably contains a polyoxyethylene alkyl ether having an average number of moles of ethylene oxide (EO) added of more than 3. The average number of moles of ethylene oxide (EO) added is preferably 4 or more and 60 or less, more preferably 4 or more and 40 or less, and even more preferably 4 or more and 25 or less. The alkyl group in the polyoxyethylene alkyl ether used as component (B2) preferably has 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, even more preferably 8 to 16 carbon atoms, still more preferably 8 to 14 carbon atoms, and even more preferably 8 to 12 carbon atoms. That is, component (B2) preferably contains one or more members selected from the group consisting of polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, and polyoxyethylene 2-hexyldecyl ether, each having an average number of moles of ethylene oxide (EO) added of more than 3, and more preferably contains polyoxyethylene lauryl ether having an average number of moles of ethylene oxide (EO) added of 4 or more and 60 or less.

[0062] Specific examples of polyoxyethylene alkyl ethers used as component (B2) include polyoxyethylene (6) lauryl ether ("EMULGEN 108" manufactured by Kao Corporation), polyoxyethylene (16) lauryl ether ("EMULGEN 116" manufactured by Kao Corporation), polyoxyethylene (23) lauryl ether ("EMULGEN 123P" manufactured by Kao Corporation), polyoxyethylene (6) stearyl ether ("EMULGEN 306L" manufactured by Kao Corporation), polyoxyethylene (13) oleyl ether ("EMULGEN 420" manufactured by Kao Corporation), and polyoxyethylene (20) 2-hexyldecyl ether ("EMULGEN 1620G" manufactured by Kao Corporation).

[0063] The mass ratio of component (B2) to component (A2) in the composition of the second invention [(B2) / (A2)] is from 4 to 30, preferably from 4 to 25, more preferably from 4 to 20, even more preferably from 4 to 15, still more preferably from 4 to 12, even more preferably from 4 to 10, still more preferably from 4 to 8, and still more preferably from 4 to 5, from the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter period of time.

[0064] The content of component (A2) in the composition of the second invention is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, even more preferably 0.04% by mass or more, still more preferably 0.05% by mass or more, and even more preferably 0.06% by mass or more, from the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter period of time. Furthermore, from the viewpoint of improving the solubility of component (A2) in the composition and promoting penetration of the composition from the spiracles to the inside of the trachea and further to the thorax and head of harmful arthropods, resulting in death in a short period of time, the concentration is preferably 10% by mass or less, more preferably 8% by mass or less, even more preferably 6% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less, even more preferably 1.5% by mass or less, even more preferably 1.2% by mass or less, even more preferably 1% by mass or less, even more preferably 0.8% by mass or less, even more preferably 0.6% by mass or less, even more preferably 0.5% by mass or less, even more preferably 0.4% by mass or less, even more preferably 0.3% by mass or less, and even more preferably 0.2% by mass or less. The content of component (A2) in the composition of the second invention is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.02% by mass or more and 8% by mass or less, even more preferably 0.02% by mass or more and 6% by mass or less, even more preferably 0.04% by mass or more and 5% by mass or less, even more preferably 0.04% by mass or more and 3% by mass or less, even more preferably 0.04% by mass or more and 2% by mass or less, even more preferably 0.04% by mass or more and 1.5% by mass or less, and even more preferably 0. The content is preferably 0.05% by mass or more and 1.2% by mass or less, even more preferably 0.05% by mass or more and 1% by mass or less, even more preferably 0.05% by mass or more and 0.8% by mass or less, even more preferably 0.05% by mass or more and 0.6% by mass or less, even more preferably 0.06% by mass or more and 0.5% by mass or less, even more preferably 0.06% by mass or more and 0.4% by mass or less, even more preferably 0.06% by mass or more and 0.3% by mass or less, and even more preferably 0.06% by mass or more and 0.2% by mass or less.

[0065] When the composition of the second invention contains the component (a21), the content of component (a21) in the composition of the second invention is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, even more preferably 0.04% by mass or more, still more preferably 0.05% by mass or more, and even more preferably 0.07% by mass or more, from the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter period of time. Furthermore, from the viewpoint of improving the solubility of component (a21) in the composition and promoting penetration of the composition from the spiracles to the inside of the trachea and further to the thorax and head of harmful arthropods, resulting in death in a short period of time, the concentration is preferably 10% by mass or less, more preferably 8% by mass or less, even more preferably 6% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less, even more preferably 1.5% by mass or less, even more preferably 1.2% by mass or less, even more preferably 1% by mass or less, even more preferably 0.8% by mass or less, even more preferably 0.6% by mass or less, even more preferably 0.5% by mass or less, even more preferably 0.4% by mass or less, even more preferably 0.3% by mass or less, and even more preferably 0.2% by mass or less. The content of component (a21) in the composition of the second invention is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.02% by mass or more and 8% by mass or less, even more preferably 0.02% by mass or more and 6% by mass or less, even more preferably 0.04% by mass or more and 5% by mass or less, even more preferably 0.04% by mass or more and 3% by mass or less, even more preferably 0.04% by mass or more and 2% by mass or less, even more preferably 0.04% by mass or more and 1.5% by mass or less, and even more preferably 0. The content is preferably 0.05% by mass or more and 1.2% by mass or less, even more preferably 0.05% by mass or more and 1% by mass or less, even more preferably 0.05% by mass or more and 0.8% by mass or less, even more preferably 0.05% by mass or more and 0.6% by mass or less, even more preferably 0.07% by mass or more and 0.5% by mass or less, even more preferably 0.07% by mass or more and 0.4% by mass or less, even more preferably 0.07% by mass or more and 0.3% by mass or less, and even more preferably 0.07% by mass or more and 0.2% by mass or less.

[0066] When the composition of the second invention contains the component (a22), the content of component (a22) in the composition of the second invention is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, even more preferably 0.04% by mass or more, still more preferably 0.05% by mass or more, and even more preferably 0.07% by mass or more, from the viewpoint of obtaining a high lethal effect against harmful arthropods in a shorter time. Furthermore, from the viewpoint of improving the solubility of component (a22) in the composition and promoting penetration of the composition from the spiracles to the inside of the trachea and further to the thorax and head of harmful arthropods, resulting in death in a short period of time, the concentration is preferably 10% by mass or less, more preferably 8% by mass or less, even more preferably 6% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less, even more preferably 1.5% by mass or less, even more preferably 1.2% by mass or less, even more preferably 1% by mass or less, even more preferably 0.8% by mass or less, even more preferably 0.6% by mass or less, even more preferably 0.5% by mass or less, even more preferably 0.4% by mass or less, even more preferably 0.3% by mass or less, and even more preferably 0.2% by mass or less. The content of component (a22) in the composition of the second invention is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.02% by mass or more and 8% by mass or less, even more preferably 0.02% by mass or more and 6% by mass or less, even more preferably 0.04% by mass or more and 5% by mass or less, even more preferably 0.04% by mass or more and 3% by mass or less, even more preferably 0.04% by mass or more and 2% by mass or less, even more preferably 0.04% by mass or more and 1.5% by mass or less, and even more preferably 0. The content is preferably 0.05% by mass or more and 1.2% by mass or less, even more preferably 0.05% by mass or more and 1% by mass or less, even more preferably 0.05% by mass or more and 0.8% by mass or less, even more preferably 0.05% by mass or more and 0.6% by mass or less, even more preferably 0.07% by mass or more and 0.5% by mass or less, even more preferably 0.07% by mass or more and 0.4% by mass or less, even more preferably 0.07% by mass or more and 0.3% by mass or less, and even more preferably 0.07% by mass or more and 0.2% by mass or less.

[0067] The content of component (B2) in the composition of the second invention is preferably 0.04% by mass or more, more preferably 0.08% by mass or more, even more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and even more preferably 0.24% by mass or more, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time. Furthermore, from the viewpoint of improving the solubility of component (B1) in the composition and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, resulting in their death in a short period of time, the content is preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 10% by mass or less, even more preferably 5% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less, even more preferably 1.5% by mass or less, even more preferably 1% by mass or less, and even more preferably 0.5% by mass or less. The content of component (B2) in the composition of the second invention is preferably 0.04% by mass or more and 30% by mass or less, more preferably 0.08% by mass or more and 20% by mass or less, even more preferably 0.08% by mass or more and 10% by mass or less, even more preferably 0.1% by mass or more and 5% by mass or less, even more preferably 0.1% by mass or more and 3% by mass or less, even more preferably 0.2% by mass or more and 2% by mass or less, even more preferably 0.2% by mass or more and 1.5% by mass or less, even more preferably 0.24% by mass or more and 1% by mass or less, and even more preferably 0.24% by mass or more and 0.5% by mass or less.

[0068] The total content of component (A2) and component (B2) in the composition of the second invention is 0.15% by mass or more, preferably 0.2% by mass or more, and more preferably 0.25% by mass or more, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time. Also, from the viewpoint of improving the solubility of component (A2) in the composition and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, resulting in their death in a short period of time, the total content is preferably 40% by mass or less, more preferably 30% by mass or less, even more preferably 20% by mass or less, even more preferably 10% by mass or less, even more preferably 5% by mass or less, even more preferably 2% by mass or less, even more preferably 1.5% by mass or less, even more preferably 1.2% by mass or less, even more preferably 1% by mass or less, even more preferably 0.8% by mass or less, and even more preferably 0.7% by mass or less. The total content of component (A2) and component (B2) in the composition of the second invention is preferably 0.15% by mass or more and 40% by mass or less, more preferably 0.15% by mass or more and 30% by mass or less, even more preferably 0.15% by mass or more and 20% by mass or less, even more preferably 0.15% by mass or more and 10% by mass or less, even more preferably 0.2% by mass or more and 5% by mass or less, even more preferably 0.2% by mass or more and 2% by mass or less, even more preferably 0.2% by mass or more and 1.5% by mass or less, even more preferably 0.2% by mass or more and 1.2% by mass or less, even more preferably 0.25% by mass or more and 1% by mass or less, even more preferably 0.25% by mass or more and 0.8% by mass or less, and even more preferably 0.25% by mass or more and 0.7% by mass or less.

[0069] <Component (C2): Alcohols with 4 or fewer carbon atoms> The composition of the second invention may further contain, as component (C2), an alcohol having 4 or less carbon atoms, for the purpose of further improving the solubility of component (A2) in the composition. Component (C2) is preferably a monohydric or dihydric alcohol, specific examples of which include methanol, ethanol, isopropyl alcohol, butyl alcohol, and propylene glycol, and one or more of these may be used. Among the above, from the viewpoint of improving the solubility of component (A2) in the composition and promoting penetration of the composition from the spiracles to the inside of the trachea and further to the thorax and head of harmful arthropods, thereby causing death in a short period of time, component (C2) preferably contains one or more selected from the group consisting of ethanol and isopropyl alcohol, and more preferably contains ethanol.

[0070] When the composition of the second invention contains component (C2), the content of component (C2) in the composition of the second invention is, from the viewpoints of improving the solubility of component (A2) in the composition and promoting penetration of the composition from the spiracles to the thorax and head of harmful arthropods, thereby causing death in a short period of time, preferably 1% by mass or more, more preferably 3% by mass or more, even more preferably 5% by mass or more, and is preferably 80% by mass or less, more preferably 60% by mass or less, even more preferably 40% by mass or less, still more preferably 20% by mass or less, still more preferably 10% by mass or less, and even more preferably 8% by mass or less. The content of component (C2) in the composition of the second invention is preferably from 1 to 80% by mass, more preferably from 1 to 60% by mass, even more preferably from 3 to 40% by mass, still more preferably from 3 to 20% by mass, even more preferably from 5 to 10% by mass, and still more preferably from 5 to 8% by mass.

[0071] The mass ratio of component (C2) to component (A2) in the composition of the second invention [(C2) / (A2)] is preferably 10 or more and 300 or less, more preferably 30 or more and 200 or less, and even more preferably 60 or more and 100 or less, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time.

[0072] The ratio of the total content of components (B2) and (C2) to the mass of component (A2) in the composition of the second invention [((B2) + (C2)) / (A2)] is preferably 10 or more and 300 or less, more preferably 30 or more and 200 or less, and even more preferably 60 or more and 100 or less, from the viewpoint of achieving a high lethal effect against harmful arthropods in a short period of time.

[0073] <Ingredient (D): Fragrance> The composition of the second invention may further contain a fragrance as component (D). Component (D) may be amyl butyrate, isoeugenol, isopulegol, isomenthone, ethyl vanillin, eugenol, eugenol acetate, ocimene, capric acid, caryophyllene, carvacrol, carvone, camphor, camphene, cinnamic acid, ethyl cinnamate, geraniol, geranyl acetate, germacrene, methyl salicylate, citral, citronellal, citronellol, 1,8-cineole (eucalyptol), dillapiole, cinnamyl acetate, cinnamyl alcohol, cinnamyl aldehyde, cymene, cedrene, cedrol, tamarind, cinnamyl aldehyde ... Examples of the hydroxybenzoates include one or more selected from the group consisting of melon, thymol, thujopsene, tetrahydrolinalool, terpineol, terpinen-4-ol, terpinene, butyl lactate, nepetalactone, neral, nerol, vanillin, pinene, piperonal, piperonyl alcohol, phenandrene, 2-phenylethylpropionate, pulegone, heliotropin, verbenone, benzyl acetate, benzyl alcohol, benzyl benzoate, bornyl acetate, myrcene, p-menthane-3,8-diol, menthol, menthone, linalool, and limonene. When the composition of the second invention contains component (D), the content of component (D) in the composition is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, even more preferably 0.01% by mass or more, and is preferably 3% by mass or less, more preferably 2% by mass or less, even more preferably 1% by mass or less.

[0074] <Water> The composition of the second invention further contains water. The water used in the present invention is not particularly limited, and examples thereof include ion-exchanged water, pure water, and distilled water. The water content in the composition of the second invention is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, still more preferably 80% by mass or more, and even more preferably 90% by mass or more, and is preferably 99.95% by mass or less, more preferably 99.8% by mass or less, and even more preferably 99.7% by mass or less. The water content in the composition of the second invention is preferably 50% by mass or more and 99.95% by mass or less, more preferably 60% by mass or more and 99.95% by mass or less, even more preferably 70% by mass or more and 99.8% by mass or less, still more preferably 80% by mass or more and 99.8% by mass or less, and even more preferably 90% by mass or more and 99.7% by mass or less. The content of water in the composition of the second invention may be the balance between component (A2) and component (B2), or the balance between component (A2), component (B2) and component (C2). The total content of water and component (C2) in the composition of the second invention is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, still more preferably 80% by mass or more, and even more preferably 90% by mass or more, and is preferably 99.95% by mass or less, more preferably 99.8% by mass or less, and even more preferably 99.7% by mass or less. The total content of water and component (C2) in the composition of the second invention is preferably 50% by mass or more and 99.95% by mass or less, more preferably 60% by mass or more and 99.95% by mass or less, even more preferably 70% by mass or more and 99.8% by mass or less, still more preferably 80% by mass or more and 99.8% by mass or less, and even more preferably 90% by mass or more and 99.7% by mass or less.

[0075] <Other ingredients> The composition of the second invention may contain, in addition to the above components, for example, a thickener, a preservative, a colorant, a pH adjuster, etc., within the scope of not impairing the effects of the invention. However, the content of components other than component (A2), component (B2), component (C2), and water in the composition of the second invention is preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 10% by mass or less, still more preferably 5% by mass or less, still more preferably 1% by mass or less, still more preferably 0.5% by mass or less, and still more preferably 0.1% by mass or less.

[0076] The composition of the second invention is a composition that is substantially free of ionic surfactants. Specifically, the content of ionic surfactants in the composition of the second invention is less than 1% by mass, preferably 0.1% by mass or less, more preferably 0.01% by mass or less, even more preferably 0.001% by mass or less, and even more preferably substantially 0% by mass.

[0077] Furthermore, the composition of the second invention is in a state in which component (A2) is dissolved in the composition, from the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter period of time. As used herein, "composition in which component (A2) is dissolved" means that the composition is clear and transparent when visually observed at 25°C, and this can be specifically evaluated by the method described in the Examples. Clear and transparent compositions may also be determined by their turbidity (OD660) at a wavelength of 660 nm being 0.05 or less. The state in which component (A2) is dissolved in the composition of the second invention can be achieved by selecting the type and content of component (A2), the type and content of component (B2), the combination and content ratio of components (A2) and (B2), the type and content of component (C2), and the like.

[0078] The method for producing the composition of the second invention is not particularly limited. For example, the composition can be produced by blending the components (A2) and (B2), water, the optional component (C2), and other components, and mixing them using a known stirring device or the like.

[0079] Hereinafter, matters common to the compositions of the first and second inventions (compositions of the present invention) will be explained. <Insecticidal ingredient> The composition of the present invention preferably contains a low content of insecticidal components or no insecticidal components, from the viewpoint of safety for humans and the environment, and from the viewpoint of obtaining a high lethal effect against harmful arthropods in a short period of time by the components (A1), (A2), (B1), and (B2) that are active ingredients for controlling harmful arthropods. This is because the composition of the present invention uses the components (A1), (A2), (B1), and (B2) as active ingredients for controlling harmful arthropods, and can be a composition that is highly effective in controlling harmful arthropods even without containing known insecticidal components. The insecticidal component may be any known insecticidal component or acaricidal component other than a surfactant.

[0080] Examples of the insecticidal component include pyrethroid insecticides, organophosphorus insecticides, and carbamate insecticides. Examples of pyrethroid insecticides include metofluthrin, dl,d-T80-allethrin, phthalthrin, d-T80-phthalthrin, d,d-T80-prallethrin, d,d-T98-prallethrin, d-T80-resmethrin, transfluthrin, imiprothrin, cyphenothrin, d,dT-cyphenothrin, empenthrin, permethrin, fenothrin, etofenprox, and pyrethrins. In addition, examples of insecticidal components other than pyrethroid insecticides include organophosphorus insecticides such as fenitrothion and malathion, carbamate insecticides such as propoxur and carbaryl, acaricides such as kelthane, quinomethionate and hexathiazox, and neonicotinoid insecticides such as imidacloprid, dinotefuran and clothiazinin.

[0081] The content of the insecticidal component in the composition of the present invention is specifically less than 1% by mass, preferably 0.1% by mass or less, more preferably 0.01% by mass or less, even more preferably 0.001% by mass or less, and even more preferably substantially 0% by mass.

[0082] <ph> The pH of the composition of the present invention at 25°C is preferably 10 or less, more preferably 8 or less, and even more preferably 7.5 or less, from the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter period of time, and is preferably 3 or more, more preferably 3.5 or more, and even more preferably 4 or more, from the viewpoint of safety for humans and the environment. The pH of the composition of the present invention at 25° C. is preferably 3 or more and 10 or less, more preferably 3.5 or more and 8 or less, and even more preferably 4 or more and 7.5 or less. The pH of the composition at 25°C can be measured by the method described in the Examples.

[0083] <Viscosity> The viscosity of the composition of the present invention at 25°C is preferably 1 mPa·s or more, more preferably 1.04 mPa·s or more, and even more preferably 1.08 mPa·s or more, from the viewpoint of achieving a high lethal effect against arthropod pests in a short period of time; and from the viewpoint of ease of penetration from the spiracles to the inside of the trachea and further to the thorax and head of arthropod pests, and ease of scattering or spraying the composition, the viscosity is preferably 5 mPa·s or less, more preferably 3 mPa·s or less, even more preferably 2 mPa·s or less, even more preferably 1.5 mPa·s or less, and even more preferably 1.3 mPa·s or less. The viscosity of the composition of the present invention at 25°C is preferably 1 mPa·s or more and 5 mPa·s or less, more preferably 1 mPa·s or more and 3 mPa·s or less, even more preferably 1.04 mPa·s or more and 2 mPa·s or less, even more preferably 1.04 mPa·s or more and 1.5 mPa·s or less, and even more preferably 1.08 mPa·s or more and 1.3 mPa·s or less. The viscosity of the composition at 25°C can be measured by the method described in the examples.

[0084] <Dosage form> A preferred dosage form of the composition of the present invention is a liquid formulation that is liquid at 25°C. As a liquid preparation, the composition of the present invention can be used as is or after diluting with water or the like.

[0085] <Discharge device> The compositions of the present invention can be sprayed or applied, for example, to arthropod pests using a dispensing device. The ejection device is preferably a device that can eject the composition of the present invention, which is a liquid formulation, in the form of droplets or a mist, and examples thereof include a spray device, an atomizer, etc. The droplets or mist may contain foam (foam particles). The discharge device preferably comprises a container or tank for storing the composition (liquid formulation) of the present invention, a spray mechanism for spraying or dispersing the composition, and a discharge port for discharging the composition. The spray mechanism has a flow path that communicates with the composition (liquid formulation) stored in the storage container, and the composition fed from the flow path can be pressure-fed by a piston or the like and sent to the discharge port through a narrowed opening or flow path, thereby discharging the composition in the form of droplets or a mist. The discharge port may be part of the spray mechanism, or it may be a separate structure as long as it is connected to the spray mechanism. The method of pressure-feeding the composition in the spray mechanism includes a non-aerosol method using a piston (including a plunger) as well as an aerosol method using a propellant such as compressed gas. From the viewpoint of targeting harmful arthropods, a non-aerosol method is preferred, as the droplet size distribution of the ejected composition is broad.

[0086] Examples of the discharge device include a handheld type that can be held in a person's hand and a small, mobile type such as a drone. In either case, the discharge device preferably has a discharge flow path that is oriented toward pests just before the opening of the discharge port, from the viewpoint of discharging the composition of the present invention toward harmful arthropods. The discharge port preferably has a cylindrical discharge flow path, and the inner diameter of the discharge flow path is preferably 0.1 to 1 mm, more preferably 0.2 to 0.8 mm, and even more preferably 0.3 to 0.6 mm. Examples of handy dispensing devices include trigger sprays and push-type sprays, and dispensing or spraying is performed by pulling a trigger or pressing a push button. The container or tank that contains the composition is typically made of plastic, and in handy discharge devices, a tube such as a dip tube is inserted into the container or tank to deliver the composition to the spray mechanism. When the trigger is pulled or the push button is pressed, the composition in the cylinder area of ​​the piston or plunger is pumped to the discharge port and sprayed, and when the pulled trigger or push button is returned, the cylinder area expands and the composition is sucked from the container or tank into the cylinder through the tube. The discharge device is preferably one equipped with a piston or plunger, and from the viewpoint of miniaturizing the discharged or sprayed particles, it is more preferably a pressure-accumulating type in which a certain amount of pressure-fed composition is accumulated just before the discharge port. The volume of the container or tank that contains the composition is not particularly limited, but is, for example, 50 mL or more and 10 L or less from the viewpoint of discharging or spraying toward harmful arthropods.

[0087] From the viewpoint of obtaining a high lethal effect against harmful arthropods in a short period of time, the amount of the composition of the present invention discharged by the discharge device per discharge is preferably 0.1 g to 5.0 g, more preferably 0.3 to 3.0 g, even more preferably 0.5 to 2.5 g, still more preferably 0.7 g to 2.0 g, and even more preferably 0.9 g to 1.5 g.

[0088] The ejection time of the composition of the present invention by the ejection device (the time from when the ejection of the composition starts to when the ejection of the composition ends) is preferably 0.05 to 5 seconds, more preferably 0.1 to 3 seconds, even more preferably 0.2 to 2 seconds, still more preferably 0.3 to 1.5 seconds, and even more preferably 0.5 to 1 second, from the viewpoint of achieving a high lethal effect against harmful arthropods in a shorter time.

[0089] [Methods for exterminating harmful arthropods] The present invention further provides a method for controlling arthropod pests (hereinafter also referred to as "the method of the present invention"), which comprises the step of contacting arthropod pests with the composition of the present invention. The method of contacting the composition of the present invention with harmful arthropods includes spraying or sprinkling the composition of the present invention toward the harmful arthropods in the space where the harmful arthropods are present or on agricultural or horticultural plants. For example, the composition is sprayed or sprinkled by discharging the composition from the discharge port of the above-mentioned discharge device toward the harmful arthropods. Preferred aspects of the discharge amount, discharge time, etc. of the composition of the present invention by the discharge device are as described above. For handheld discharge devices, a single spray is performed by pulling the trigger in the case of a trigger spray, or by pressing the push button in the case of a push type. From the viewpoint of being held in a person's hand and used, trigger sprays and push types are preferred, with trigger sprays being more preferred from the viewpoint of ease of single spraying and repeated operations. Furthermore, from the viewpoint of being held in a hand and discharging toward harmful arthropods, it is preferred that the handheld discharge device has a discharge port on the side when held in a hand, and a discharge flow path facing to the side. A small, mobile discharge device such as a drone may be one in which the discharge port opens when a switch is turned on and sprays during flight, or may be equipped with any of various known spray mechanisms. The small, mobile discharge device may be mounted on a small airplane as well as on a means of transportation such as a drone. The discharge port of the small, mobile discharge device is preferably positioned on the bottom, from the viewpoint of spraying toward pests during flight.

[0090] In relation to the above-mentioned embodiment, the present invention further discloses the following spray composition for controlling arthropods.

[0091] <1> The following components (A1) and (B1): (A1) One or more selected from the group consisting of nonionic surfactants (a11) and oily components (a12), whose solubility X in water at 25°C is 5 g / kg or less, and whose solubility in a 0.05 mass% aqueous sodium lauryl sulfate solution at 25°C is Yg / kg, Y / X is 1.2 or more. (B1) Surfactant containing ionic surfactant (b1) A pest control composition comprising: A composition for controlling arthropod pests, wherein the mass ratio of component (B1) to component (A1) in the composition [(B1) / (A1)] is 4 or more and 30 or less.

[0092] <2> The content of the component (A1) is preferably 0.001% by mass or more and 10% by mass or less, more preferably 0.002% by mass or more and 8% by mass or less, even more preferably 0.003% by mass or more and 6% by mass or less, even more preferably 0.005% by mass or more and 5% by mass or less, even more preferably 0.01% by mass or more and 3% by mass or less, even more preferably 0.02% by mass or more and 2% by mass or less, even more preferably 0.02% by mass or more and 1.5% by mass or less, and even more preferably 0.04% by mass or more. % by mass or more and 1.2% by mass or less, even more preferably 0.04% by mass or more and 1% by mass or less, even more preferably 0.04% by mass or more and 0.8% by mass or less, even more preferably 0.06% by mass or more and 0.6% by mass or less, even more preferably 0.06% by mass or more and 0.5% by mass or less, even more preferably 0.07% by mass or more and 0.4% by mass or less, even more preferably 0.07% by mass or more and 0.3% by mass or less, and even more preferably 0.07% by mass or more and 0.2% by mass or less, <1> The pest control composition according to claim 1. <3> The solubility X (g / kg) of the component (A1) in water at 25°C is 5 g / kg or less, preferably 0.001 g / kg or more and 5 g / kg or less, more preferably 0.01 g / kg or more and 4 g / kg or less, more preferably 0.03 g / kg or more and 3.5 g / kg or less, and even more preferably 0.1 g / kg or more and 3.5 g / kg or less. <1> or <2> The pest control composition according to claim 1. <4> The solubility Y (g / kg) of the component (A1) in a 0.05% by mass aqueous sodium lauryl sulfate solution at 25°C is preferably 0.035 g / kg or more and 100 g / kg or less, more preferably 0.05 g / kg or more and 50 g / kg or less, more preferably 0.07 g / kg or more and 10 g / kg or less, even more preferably 0.1 g / kg or more and 10 g / kg or less, and still more preferably 0.5 g / kg or more and 5 g / kg or less. <1> ~ <3> 10. The pest arthropod control composition according to claim 1, wherein <5> The Y / X ratio of the component (A1) is 1.2 or more, preferably 1.2 or more and 100 or less, more preferably 2 or more and 50 or less, more preferably 2 or more and 30 or less, even more preferably 4 or more and 10 or less, and still more preferably 4 or more and 4.5 or less. <1> ~ <4> 10. The pest arthropod control composition according to claim 1, wherein <6> The nonionic surfactant (a11) preferably comprises one or more selected from the group consisting of polyoxyalkylene alkyl ethers and alkyl glyceryl ethers, more preferably one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, and alkyl glyceryl ethers, each having an average number of moles of ethylene oxide (EO) added of 3 or less, even more preferably one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, 2-ethylhexyl glyceryl ethers, and isodecyl glyceryl ethers, each having an average number of moles of ethylene oxide (EO) added of 3 or less, still more preferably one or more selected from the group consisting of polyoxypropylene alkyl ethers, 2-ethylhexyl glyceryl ethers, and isodecyl glyceryl ethers, and even more preferably one or more selected from the group consisting of polyoxypropylene alkyl ethers, 2-ethylhexyl glyceryl ethers, and isodecyl glyceryl ethers, and still more preferably 2-ethylhexyl glyceryl ether. <1> ~ <5> 10. The pest arthropod control composition according to claim 1, wherein <7> The oily component (a12) preferably comprises one or more selected from the group consisting of alcohols and esters having 8 or more carbon atoms, more preferably comprises an alcohol having 8 or more carbon atoms, even more preferably a monohydric or dihydric alcohol having 8 to 22 carbon atoms, still more preferably a monohydric alcohol having 8 to 22 carbon atoms, even more preferably a monohydric alcohol having 8 to 18 carbon atoms, still more preferably a monohydric alcohol having 8 to 14 carbon atoms, still more preferably a monohydric alcohol having 8 to 12 carbon atoms, and even more preferably a monohydric alcohol having 8 to 9 carbon atoms, <1> ~ <5> 10. The pest arthropod control composition according to claim 1, wherein <8> The ionic surfactant (b1) preferably includes at least one selected from the group consisting of anionic surfactants, cationic surfactants, and amphoteric surfactants. <1> ~ <7> 10. The pest arthropod control composition according to claim 1, wherein <9> The ionic surfactant (b1) preferably comprises one or more surfactants selected from the group consisting of cationic surfactants and amphoteric surfactants, or one or more surfactants selected from the group consisting of alkyl or alkenyl sulfates, alkyl or alkenyl ether sulfates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, N-acylamino acid salts, alkyl sulfosuccinates, alkyl sulfonates, α-olefin sulfonates, internal olefin sulfonates, alkylbenzene sulfonates, α-sulfofatty acid methyl ester salts, acylmethyl taurine salts, and alkyl phosphates, each of which has an alkyl or alkenyl group and a fatty acid having from 8 to 22 carbon atoms. more preferably, the surfactant contains one or more selected from the group consisting of alkyl ether sulfates, alkyl sulfates, saturated fatty acid salts, alkyl sulfosuccinate ester salts, benzalkonium chloride, alkyldimethylamine oxide, and fatty acid amidopropyl betaine, each of which has from 8 to 22 carbon atoms in the alkyl group or fatty acid; and even more preferably, the surfactant contains one or more selected from the group consisting of polyoxyethylene lauryl ether sodium sulfate, sodium lauryl sulfate, sodium laurate, dioctyl sodium sulfosuccinate, benzalkonium chloride, lauryldimethylamine oxide, and lauric acid amidopropyl betaine; <1> ~ <7> 10. The pest arthropod control composition according to claim 1, wherein <10> the mass ratio of the component (B1) to the component (A1) [(B1) / (A1)] is 4 or more and 30 or less, preferably 4 or more and 25 or less, more preferably 4 or more and 20 or less, even more preferably 4 or more and 15 or less, still more preferably 4 or more and 12 or less, and still more preferably 4 or more and 10 or less; <1> ~ <9> 10. The pest arthropod control composition according to claim 1, wherein <11> The content of the component (B1) is preferably 0.004% by mass or more and 30% by mass or less, more preferably 0.008% by mass or more and 20% by mass or less, even more preferably 0.01% by mass or more and 10% by mass or less, still more preferably 0.02% by mass or more and 5% by mass or less, still more preferably 0.04% by mass or more and 3% by mass or less, still more preferably 0.08% by mass or more and 2% by mass or less, still more preferably 0.1% by mass or more and 1.5% by mass or less, still more preferably 0.2% by mass or more and 1% by mass or less, and still more preferably 0.24% by mass or more and 1% by mass or less, <1> ~ <10> 10. The pest arthropod control composition according to claim 1, wherein <12> The total content of the component (A1) and the component (B1) is preferably 0.005% by mass or more and 40% by mass or less, even more preferably 0.01% by mass or more and 30% by mass or less, even more preferably 0.02% by mass or more and 20% by mass or less, even more preferably 0.05% by mass or more and 10% by mass or less, even more preferably 0.1% by mass or more and 5% by mass or less, even more preferably 0.2% by mass or more and 2% by mass or less, even more preferably 0.25% by mass or more and 1.5% by mass or less, even more preferably 0.3% by mass or more and 1.2% by mass or less, even more preferably 0.32% by mass or more and 1.2% by mass or less, even more preferably 0.36% by mass or more and 1% by mass or less, and even more preferably 0.4% by mass or more and 1% by mass or less, <1> ~ <11> 10. The pest arthropod control composition according to claim 1, wherein <13> Further, the component (C1) contains an alcohol having 4 or less carbon atoms. <1> ~ <12> 10. The pest arthropod control composition according to claim 1, wherein <14> The content of the component (C1) is preferably 1% by mass or more and 80% by mass or less, more preferably 3% by mass or more and 60% by mass or less, even more preferably 5% by mass or more and 40% by mass or less, still more preferably 5% by mass or more and 20% by mass or less, and still more preferably 5% by mass or more and 10% by mass or less. <13> The pest control composition according to claim 1. <15> the mass ratio of the component (C1) to the component (A1) [(C1) / (A1)] is preferably 5 or more and 500 or less, more preferably 10 or more and 300 or less, even more preferably 30 or more and 200 or less, and still more preferably 60 or more and 100 or less; <13> or <14> The pest control composition according to claim 1. <16> the ratio of the total content of the components (B1) and (C1) to the mass of the component (A1) [((B1) + (C1)) / (A1)] is preferably 5 or more and 500 or less, more preferably 10 or more and 300 or less, even more preferably 30 or more and 200 or less, and still more preferably 60 or more and 100 or less; <13> ~ <15> 10. The pest arthropod control composition according to claim 1, wherein <17> Further, it contains a fragrance as component (D). <1> ~ <16> 10. The pest arthropod control composition according to claim 1, wherein <18> Further containing water, <1> ~ <17> 10. The pest arthropod control composition according to claim 1, wherein <19> The water content is preferably 50% by mass or more and 99.8% by mass or less, more preferably 60% by mass or more and 99.8% by mass or less, even more preferably 70% by mass or more and 99.8% by mass or less, still more preferably 80% by mass or more and 99.7% by mass or less, still more preferably 85% by mass or more and 99.7% by mass or less, still more preferably 90% by mass or more and 99.7% by mass or less, and still more preferably 95% by mass or more and 99.7% by mass or less. <18> The pest control composition according to claim 1.

[0093] <20> The following components (A2) and (B2): (A2) one or more selected from the group consisting of nonionic surfactants (a21) and oily components (a22), each having a solubility X in water at 25°C of 5 g / kg or less (B2) Nonionic surfactants other than the component (a21) A pest control composition comprising: the composition further comprises water; the mass ratio of the component (B2) to the component (A2) in the composition [(B2) / (A2)] is 4 or more and 30 or less, the total content of the component (A2) and the component (B2) in the composition is 0.15% by mass or more, A pest arthropod control composition in which the component (A2) is dissolved in the composition.

[0094] <21> The content of the component (A2) is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.02% by mass or more and 8% by mass or less, even more preferably 0.02% by mass or more and 6% by mass or less, even more preferably 0.04% by mass or more and 5% by mass or less, even more preferably 0.04% by mass or more and 3% by mass or less, even more preferably 0.04% by mass or more and 2% by mass or less, even more preferably 0.04% by mass or more and 1.5% by mass or less, and even more preferably 0.05% by mass or more. % or more and 1.2% by mass or less, even more preferably 0.05% by mass or more and 1% by mass or less, even more preferably 0.05% by mass or more and 0.8% by mass or less, even more preferably 0.05% by mass or more and 0.6% by mass or less, even more preferably 0.06% by mass or more and 0.5% by mass or less, even more preferably 0.06% by mass or more and 0.4% by mass or less, even more preferably 0.06% by mass or more and 0.3% by mass or less, and even more preferably 0.06% by mass or more and 0.2% by mass or less, <20> The pest control composition according to claim 1. <22> The solubility X (g / kg) of the component (A2) in water at 25°C is 5 g / kg or less, preferably 0.001 g / kg or more and 5 g / kg or less, more preferably 0.01 g / kg or more and 4 g / kg or less, and more preferably 0.1 g / kg or more and 3.5 g / kg or less. <20> or <21> The pest control composition according to claim 1. <23> The nonionic surfactant (a21) preferably comprises one or more selected from the group consisting of polyoxyalkylene alkyl ethers and alkyl glyceryl ethers, more preferably one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, and alkyl glyceryl ethers, each having an average number of moles of ethylene oxide (EO) added of 3 or less, even more preferably one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, 2-ethylhexyl glyceryl ethers, and isodecyl glyceryl ethers, each having an average number of moles of ethylene oxide (EO) added of 3 or less, still more preferably one or more selected from the group consisting of polyoxypropylene alkyl ethers, 2-ethylhexyl glyceryl ethers, and isodecyl glyceryl ethers, and even more preferably one or more selected from the group consisting of polyoxypropylene alkyl ethers, 2-ethylhexyl glyceryl ethers, and isodecyl glyceryl ethers, and still more preferably 2-ethylhexyl glyceryl ether. <20> ~ <22> 10. The pest arthropod control composition according to claim 1, wherein <24> The oil component (a22) preferably contains one or more selected from the group consisting of alcohols and esters having 8 or more carbon atoms, more preferably contains an alcohol having 8 or more carbon atoms, and even more preferably contains a monohydric alcohol having 8 to 9 carbon atoms. <20> ~ <23> 10. The pest arthropod control composition according to claim 1, wherein <25> the component (B2) preferably contains a polyoxyethylene alkyl ether having an average number of moles of ethylene oxide (EO) added of more than 3, more preferably one or more selected from the group consisting of polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, and polyoxyethylene 2-hexyldecyl ether, each having an average number of moles of ethylene oxide (EO) added of more than 3, and even more preferably polyoxyethylene lauryl ether having an average number of moles of ethylene oxide (EO) added of 4 or more and 60 or less; <20> ~ <24> 10. The pest arthropod control composition according to claim 1, wherein <26> the mass ratio of component (B2) to component (A2) [(B2) / (A2)] is 4 or more and 30 or less, preferably 4 or more and 25 or less, more preferably 4 or more and 20 or less, even more preferably 4 or more and 15 or less, still more preferably 4 or more and 12 or less, still more preferably 4 or more and 10 or less, still more preferably 4 or more and 8 or less, and still more preferably 4 or more and 5 or less; <20> ~ <25> 10. The pest arthropod control composition according to claim 1, wherein <27> The content of the component (B2) is preferably 0.04% by mass or more and 30% by mass or less, more preferably 0.08% by mass or more and 20% by mass or less, even more preferably 0.08% by mass or more and 10% by mass or less, even more preferably 0.1% by mass or more and 5% by mass or less, even more preferably 0.1% by mass or more and 3% by mass or less, even more preferably 0.2% by mass or more and 2% by mass or less, even more preferably 0.2% by mass or more and 1.5% by mass or less, even more preferably 0.24% by mass or more and 1% by mass or less, and even more preferably 0.24% by mass or more and 0.5% by mass or less, <20> ~ <26> 10. The pest arthropod control composition according to claim 1, wherein <28> the total content of the component (A2) and the component (B2) is 0.15% by mass or more, preferably 0.15% by mass or more and 40% by mass or less, more preferably 0.15% by mass or more and 30% by mass or less, even more preferably 0.15% by mass or more and 20% by mass or less, even more preferably 0.15% by mass or more and 10% by mass or less, even more preferably 0.2% by mass or more and 5% by mass or less, even more preferably 0.2% by mass or more and 2% by mass or less, even more preferably 0.2% by mass or more and 1.5% by mass or less, even more preferably 0.2% by mass or more and 1.2% by mass or less, even more preferably 0.25% by mass or more and 1% by mass or less, even more preferably 0.25% by mass or more and 0.8% by mass or less, and even more preferably 0.25% by mass or more and 0.7% by mass or less, <20> ~ <27> 10. The pest arthropod control composition according to claim 1, wherein <29> Further, the component (C2) contains an alcohol having 4 or less carbon atoms. <20> ~ <28> 10. The pest arthropod control composition according to claim 1, wherein <30> The content of the component (C2) is preferably 1% by mass or more and 80% by mass or less, more preferably 1% by mass or more and 60% by mass or less, even more preferably 3% by mass or more and 40% by mass or less, still more preferably 3% by mass or more and 20% by mass or less, still more preferably 5% by mass or more and 10% by mass or less, and still more preferably 5% by mass or more and 8% by mass or less. <29> The pest control composition according to claim 1. <31> the mass ratio of the component (C2) to the component (A2) [(C2) / (A2)] is preferably 10 or more and 300 or less, more preferably 30 or more and 200 or less, and even more preferably 60 or more and 100 or less; <29> or <30> The pest control composition according to claim 1. <32> the ratio of the total content of the components (B2) and (C2) to the mass of the component (A2) [((B2) + (C2)) / (A2)] is preferably 10 or more and 300 or less, more preferably 30 or more and 200 or less, and even more preferably 60 or more and 100 or less; <29> ~ <31> 10. The pest arthropod control composition according to claim 1, wherein <33> Further, it contains a fragrance as component (D). <20> ~ <32> 10. The pest arthropod control composition according to claim 1, wherein <34> The water content is preferably 50% by mass or more and 99.95% by mass or less, more preferably 60% by mass or more and 99.95% by mass or less, even more preferably 70% by mass or more and 99.8% by mass or less, still more preferably 80% by mass or more and 99.8% by mass or less, and even more preferably 90% by mass or more and 99.7% by mass or less. <20> ~ <33> 10. The pest arthropod control composition according to claim 1, wherein <35> the total content of the water and component (C2) is preferably 50% by mass or more and 99.95% by mass or less, more preferably 60% by mass or more and 99.95% by mass or less, even more preferably 70% by mass or more and 99.8% by mass or less, still more preferably 80% by mass or more and 99.8% by mass or less, and even more preferably 90% by mass or more and 99.7% by mass or less; <20> ~ <34> 10. The pest arthropod control composition according to claim 1, wherein

[0095] <36> The content of the insecticidal component is preferably less than 1% by mass, more preferably 0.1% by mass or less, more preferably 0.01% by mass or less, even more preferably 0.001% by mass or less, and even more preferably substantially 0% by mass. <1> ~ <35> 10. The pest arthropod control composition according to claim 1, wherein <37> The pH of the composition at 25°C is preferably 10 or less, more preferably 3 or more and 10 or less, more preferably 3.5 or more and 8 or less, and even more preferably 4 or more and 7.5 or less. <1> ~ <36> 10. The pest arthropod control composition according to claim 1, wherein <38> The viscosity of the composition at 25°C is preferably 1 mPa·s or more and 5 mPa·s or less, more preferably 1 mPa·s or more and 3 mPa·s or less, even more preferably 1.04 mPa·s or more and 2 mPa·s or less, even more preferably 1.04 mPa·s or more and 1.5 mPa·s or less, and even more preferably 1.08 mPa·s or more and 1.3 mPa·s or less, <1> ~ <37> 10. The pest arthropod control composition according to claim 1, wherein <39> The arthropod pest is preferably an arthropod having a spiracles, more preferably an insect, a crustacean, a spider or a centipede. <1> ~ <38> 10. The pest arthropod control composition according to claim 1, wherein <40> The pest arthropod control composition is preferably a composition that has the ability to penetrate from the spiracles to the inside of the trachea and further to the head of pest arthropods. <1> ~ <39> 10. The pest arthropod control composition according to claim 1, wherein

[0096] <41> <1> ~ <40> 10. A method for controlling arthropod pests, comprising the step of contacting arthropod pests with the composition for controlling arthropod pests according to any one of the preceding claims. <42> The contacting method is preferably a method of spraying or dusting the pest arthropod control composition toward the space where the pest arthropods are present or toward the pest arthropods on agricultural or horticultural plants. <41> The method for exterminating harmful arthropods described in the above. <43> <1> ~ <40> 1. Use of the composition according to any one of the preceding items as a composition for controlling arthropod pests. [Example]

[0097] The present invention will be described below with reference to examples, but is not limited to the scope of the examples. In the examples, various evaluations and measurements were carried out by the following methods.

[0098] (pH) The pH of the pest arthropod control composition was measured at 25°C using a pH meter (electrode: 6367-10D (manufactured by Horiba Ltd.)).

[0099] (viscosity) The viscosity of the pest arthropod control composition was measured at 25°C using a viscometer TVB-10M (manufactured by Toki Sangyo Co., Ltd.) with a low viscosity adapter or rotor No. 4 at 60 rpm.

[0100] (Knockdown rate after 2 minutes) Ten mosquitoes were placed in an acrylic box (6 × 6 × 4 cm) covered on both sides with mesh cloth (nylon, 15D, mesh shape: hexagonal, mesh size: 1.5 mm). The mosquitoes resting on the mesh were sprayed once with each pest arthropod control composition from a trigger-type spray container (trigger type: pressure-storage spray, volume: 370 mL, nozzle diameter: 0.8 mm, discharge amount: 0.9 g / spray) from a distance of 40 cm (see Figure 1). If the mosquito fell onto its back or side and was unable to maintain flight after being lightly tapped on the acrylic box, the mosquito was recorded as having been knocked down. The number of knocked-down mosquitoes was counted 2 minutes after spraying the composition, and the knock-down rate was calculated as the number of knocked-down mosquitoes / 10×100 (%).

[0101] (exterior) Approximately 100 mL of the pest arthropod control composition shown in Table 3 was filled into a Labolan screw cap bottle No. 8 (a glass bottle with a capacity of 110 mL, mouth inner diameter × body diameter × height (mm) = 20.3 × 40 × 120) manufactured by AS ONE Corporation, and the appearance was visually observed at room temperature (25°C). Clear and transparent compositions were rated as "A," and compositions with turbidity were rated as "C." A composition rated "A" was determined to have component (A2) dissolved in the composition.

[0102] Examples 1 to 17 and Comparative Examples 1 to 11 (Preparation and Evaluation of Harmful Arthropod Control Composition 1) The components shown in Tables 1 and 2 were blended and mixed with a stirrer to prepare pest arthropod control composition 1 of the first invention. The amounts shown in Tables 1 and 2 are the active ingredient amounts (mass %) of each component. The pH and viscosity of the resulting composition were measured by the above-mentioned methods. The prepared composition was filled into the trigger spray container to prepare a spray. The resulting spray was used to evaluate the knockdown rate by the method described above. The evaluation results are shown in Tables 1 and 2.

[0103] [Table 1]

[0104] [Table 2]

[0105] Examples 18 to 21 and Comparative Examples 12 to 17 (Preparation and Evaluation of Harmful Arthropod Control Composition 2) The components shown in Table 3 were blended and mixed with a stirrer to prepare a pest arthropod control composition 2 of the second invention. The amounts shown in Table 3 are the active ingredient amounts (mass%) of each component. The resulting composition was evaluated for appearance and measured for pH and viscosity using the methods described above. The prepared composition was filled into the trigger spray container to prepare a spray. The knockdown rate of the obtained spray was evaluated by the method described above. The evaluation results are shown in Table 3.

[0106] [Table 3]

[0107] The ingredients listed in the table are as follows: (Components (A1), (A2)) PENETOL GE-EH: 2-ethylhexyl glyceryl ether (Kao Corporation), solubility in water at 25°C, X: 3 g / kg, solubility in 0.05% by mass sodium lauryl sulfate aqueous solution at 25°C, Y: 6 g / kg or more, Y / X ≥ 2 PENETOL GE-ID: Isodecyl glyceryl ether (Kao Corporation), solubility in water at 25°C, X: 0.02 g / kg or less, solubility in 0.05% by mass sodium lauryl sulfate aqueous solution at 25°C, Y: 0.08 g / kg, Y / X ≥ 4 KAO SOFCARE GP-1: PPG-3 caprylyl ether (Kao Corporation), solubility in water at 25°C, X: 0.02 g / kg or less, solubility in 0.05% by mass sodium lauryl sulfate aqueous solution at 25°C, Y: 0.1 g / kg, Y / X ≥ 5 KALCOL 0898: n-octyl alcohol (Kao Corporation), solubility in water at 25°C, X: 0.3 g / kg, solubility in 0.05% by mass sodium lauryl sulfate aqueous solution at 25°C, Y: 0.39 g / kg, Y / X = 1.3

[0108] (Components of component (B1), component (B2)) (b1) Sodium dioctyl sulfosuccinate (Tokyo Chemical Industry Co., Ltd.) (b1) EMAL 0: Sodium lauryl sulfate (Kao Corporation) (b1) EMAL 270J: Polyoxyethylene (2) lauryl ether sodium sulfate (Kao Corporation) (b1) SANIZOL C: Benzalkonium chloride (Kao Corporation) (b1) AMPHITOL 20N: Lauryl dimethylamine oxide (Kao Corporation) (b1) Sodium laurate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) (b1) AMPHITOL 20AB: Lauryl amidopropyl betaine (Kao Corporation) (B2) EMULGEN 108: Polyoxyethylene (6) lauryl ether (Kao Corporation), solubility in water at 25°C: 150 g / kg or more

[0109] Tables 1 to 3 show that the pest control composition of the present invention has a high knockdown rate of pests in as little as two minutes, and there is no problem with the appearance of the residue after drying.

[0110] Furthermore, using the compositions of Example 3 and Comparative Example 1, it was confirmed whether or not the compositions had penetrated into the heads of mosquitoes by the following method. A dye (Blue No. 1) was added to each composition to a concentration of 0.03% by mass to prepare a colored composition. 200 μL of the colored composition was dropped onto the spiracles of harmful arthropods. These procedures were performed under microscope observation, with the abdomens of mosquitoes that had been previously subjected to low-temperature treatment to put them into a state of suspended animation, fixed to insect pins using UV-curable resin to restrict their movement. After 2 minutes, if the internal trachea at the junction of the mosquito's head and thorax was observed to be blue under the microscope, it was determined that the composition had penetrated the mosquito's head.

[0111] Figure 2 shows a microscope image of the internal trachea at the junction of the head and thorax of a mosquito when no composition was used, Figure 3 shows an image when the composition of Example 3 was used, and Figure 4 shows an image when the composition of Comparative Example 1 was used. In Figure 3, blue streaks of coloration were observed extending diagonally downward to the right from the tips of the two arrows. In contrast, no coloration was observed in either Figure 2 or Figure 4.

[0112] Furthermore, this embodiment discloses the following formulation examples. Components (A1), (B1), and (C1) shown in Tables 4 to 11 are the same as above. As component (D) shown in Tables 4 to 11, either a fragrance shown in Table 12 or a fragrance composition shown in Table 13 is blended.

[0113] [Table 4]

[0114] [Table 5]

[0115] [Table 6]

[0116] [Table 7]

[0117] [Table 8]

[0118] [Table 9]

[0119] [Table 10]

[0120] [Table 11]

[0121] [Table 12]

[0122] [Table 13] [Industrial Applicability]

[0123] According to the present invention, it is possible to provide a pest arthropod control composition that can achieve a high lethal effect on pest arthropods in a shorter period of time.< / ph>

Claims

1. The following components (A1) and (B1): (A1) One or more selected from the group consisting of nonionic surfactants (a11) and oily components (a12), which have a solubility X in water at 25°C of 5 g / kg or less and a solubility Y / X of 1.2 or more, where Yg / kg is the solubility in a 0.05% by mass aqueous sodium lauryl sulfate solution at 25°C. (B1) Surfactant containing ionic surfactant (b1) A pest control composition comprising: A pest control composition, wherein the mass ratio of the component (B1) to the component (A1) in the composition [(B1) / (A1)] is 4 or more and 30 or less.

2. The following components (A2) and (B2): (A2) One or more selected from the group consisting of nonionic surfactants (a21) and oily components (a22), each having a solubility X in water at 25°C of 5 g / kg or less. (B2) Nonionic surfactants other than the component (a21) A pest control composition comprising: the composition further comprises water; the mass ratio of the component (B2) to the component (A2) in the composition [(B2) / (A2)] is 4 or more and 30 or less, the total content of the component (A2) and the component (B2) in the composition is 0.15% by mass or more, A pest arthropod control composition in which the component (A2) is dissolved in the composition.

3. The pest control composition according to claim 1, wherein the content of the component (A1) in the composition is 0.001% by mass or more and 10% by mass or less.

4. The pest arthropod control composition according to claim 2, wherein the content of the component (A2) in the composition is 0.001% by mass or more and 10% by mass or less.

5. The pest arthropod control composition according to claim 1, wherein the nonionic surfactant (a11) comprises one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, and alkyl glyceryl ethers, each having an average number of moles of ethylene oxide (EO) added of 3 or less.

6. The pest arthropod control composition according to claim 1, wherein the oil component (a12) comprises one or more selected from the group consisting of alcohols and esters having 8 or more carbon atoms.

7. The pest arthropod control composition according to claim 1, wherein the ionic surfactant (b1) comprises at least one selected from the group consisting of cationic surfactants and amphoteric surfactants.

8. The pest arthropod control composition according to claim 1, wherein the ionic surfactant (b1) comprises one or more anionic surfactants selected from the group consisting of alkyl or alkenyl sulfates, alkyl or alkenyl ether sulfates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, N-acylamino acid salts, alkyl sulfosuccinates, alkyl sulfonates, α-olefin sulfonates, internal olefin sulfonates, alkylbenzene sulfonates, α-sulfofatty acid methyl ester salts, acylmethyl taurine salts, and alkyl phosphates, each of which has an alkyl or alkenyl group and a fatty acid having from 8 to 22 carbon atoms.

9. The pest arthropod control composition according to claim 2, wherein the nonionic surfactant (a21) comprises one or more selected from the group consisting of polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, and alkyl glyceryl ethers, each having an average number of moles of ethylene oxide (EO) added of 3 or less.

10. The pest control composition according to claim 2, wherein the oil component (a22) comprises one or more selected from the group consisting of alcohols and esters having 8 or more carbon atoms.

11. 3. The arthropod pest control composition according to claim 2, wherein the component (B2) comprises a polyoxyethylene alkyl ether having an average number of moles of ethylene oxide (EO) added of more than 3.

12. The arthropod pest control composition according to claim 1, further comprising water.

13. The pest arthropod control composition according to any one of claims 1 to 12, wherein the viscosity of the composition at 25 ° C. is 1 mPa · s or more and 5 mPa · s or less.

14. The arthropod pest control composition according to any one of claims 1 to 12, wherein the pH of the composition at 25°C is 10 or less.

15. The pest arthropod control composition according to any one of claims 1 to 12, wherein the content of the insecticidal component is less than 1% by mass.

16. The pest arthropod control composition according to any one of claims 1 to 12, wherein the pest arthropod is an arthropod having a spiracles.

17. The pest arthropod control composition according to claim 16, wherein the composition has the ability to penetrate from the spiracles to the inside of the trachea and further to the head of the pest arthropod.

18. A method for controlling arthropod pests, comprising the step of contacting the composition according to claim 1 or 2 with arthropod pests.

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