Flying pest control composition and flying pest control spray

Abstract

To provide a flying pest control composition that is used by being sprayed on a flying pest, has high safety to a human body and the environment, and allows the sprayed droplets to efficiently reach the flying pest, having a high control effect.SOLUTION: This flying pest control composition contains 0.01-3.0 mass% of a wing wetting agent having a surface tension of 27.0-50.0 mN / m when measured at 25°C as a 3 mmol / kg aqueous solution, and is used by being sprayed in the form of droplets having an average particle size of 20-400 μm.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a composition for controlling flying pests and a spray for controlling flying pests.

Background Art

[0002] Pests, such as flying pests like mosquitoes and flies, are factors that cause infections by transmitting pathogens to animals such as humans and cause dermatitis. In particular, some mosquitoes are very harmful insects hygienically because they transmit pathogens such as dengue fever, Zika fever, yellow fever, encephalitis, and malaria. Conventionally, in order to protect oneself from such flying pests, methods such as spraying insecticides and applying pest repellents to the skin surface have been widely used.

[0003] However, there are concerns about the safety of the insecticidal components contained in insecticides and the pest repellent components contained in pest repellents for the human body. In particular, the application of highly safe insecticides or pest repellents is desired for infants who are easily bitten by mosquitoes. Also, conventionally, mainly preventing insect bites outdoors has been considered, but recent research has revealed that the frequency of being bitten by mosquitoes is as high or higher indoors than outdoors. Therefore, proposals for protecting oneself from flying pests indoors are desired.

[0004] Regarding a method of capturing and controlling flying pests without using an insecticidal component, for example, Patent Document 1 discloses a method of spraying ethyl alcohol or a liquid containing ethyl alcohol on flying insects such as flies to interfere with flight and capture the flying insects. Patent Document 2 discloses that a pest control agent and a pest control preparation, which are aqueous liquids containing a (meth)acrylic acid alkyl ester copolymer having a film-forming ability and a surfactant, can obtain a pest control effect even without containing an insecticidal component.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-180635 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-97004 [Summary of the Invention] [Problems to be Solved by the Invention]

[0006] Patent Document 1 describes spraying flying insects with ethyl alcohol itself or, for example, a dilution of 70% by weight of ethyl alcohol with 30% by weight of water. However, the method of spraying a liquid containing a large amount of ethyl alcohol, which is a flammable organic solvent, is not a preferable method from the viewpoint of environmental safety. The pest control agent of Patent Document 2 contains a (meth)acrylic acid alkyl ester copolymer having a film-forming ability. When sprayed on flying pests, it reduces the flexibility of the wings of the flying pests, causes them to lose their flying ability, or forms a film that blocks the spiracles or tracheae to suffocate the pests, thereby achieving a pest control effect. However, since a pest control agent of the type sprayed on flying pests needs to be adjusted to a viscosity suitable for spraying, the addition amount of the polymer, which is an active ingredient as a pest control agent, is substantially limited. In addition, a pest control agent of the type sprayed on flying pests is also required to have a performance such that when sprayed on flying pests from a location a certain distance or more away to enhance the control effect, the spray droplets of the pest control agent do not scatter up, down, left, or right but travel straight and efficiently reach the flying pests. Details of such performance have not been examined in Patent Documents 1 and 2.

[0007] An object of the present invention is to provide a composition for controlling flying pests to be used by spraying on flying pests, which has high safety to the human body and the environment, can efficiently reach the flying pests with spray droplets, and has a high control effect. [Means for Solving the Problems]

[0008] The inventors have found that, in a composition for controlling flying pests which is used by spraying on flying pests, by containing a specific amount of a wetting agent capable of wetting the wings of flying pests in the composition, the flying ability of flying pests is reduced when the composition is sprayed on flying pests, and by this action, flying pests can be effectively controlled without using an insecticidal component. Further, in the composition, by setting the average particle size of the spray droplets within a specific range, the straightness of the spray droplets is enhanced when the composition is sprayed on flying pests, and the spray droplets can reach the flying pests efficiently, and it has been found that the control effect on flying pests can be improved. In the present invention, reducing the flying ability of flying pests means that the flying pests cannot fly. Further, in the present invention, controlling flying pests means rendering flying pests harmless to animals such as humans by means of an action mechanism such as suppressing the flight of flying pests, shooting down flying pests during flight and causing them to fall to the ground, or causing flying pests landing on a wall or the like to fall to the ground.

[0009] That is, the present invention provides the following [1] to [4]. [1] A composition for controlling flying pests, which is used by spraying as droplets having an average particle size of 20 μm or more and 400 μm or less and containing 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution. [2] A composition for controlling flying pests, which is used by spraying as droplets having an average particle size of 20 μm or more and 400 μm or less and containing 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent and having a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less. [3] A spray for controlling flying pests filled with a composition for controlling flying pests, wherein the composition contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. [4] A spray for controlling flying pests filled with a composition for controlling flying pests in a spray container, wherein the composition has a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less, contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less.

Advantages of the Invention

[0010] According to the present invention, it is possible to provide a composition for controlling flying pests and a spray for controlling flying pests that are highly safe to the human body and the environment, and can reduce the flying ability of flying pests and efficiently control them by spraying on the flying pests.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0012] [Composition for Controlling Flying Pests] The composition for controlling flying pests according to the first aspect of the present invention contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution, and is used by spraying as droplets having an average particle size of 20 μm or more and 400 μm or less. Further, the composition for controlling flying pests according to the second aspect of the present invention contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent, is used by spraying as droplets having an average particle size of 20 μm or more and 400 μm or less, and is a composition for controlling flying pests having a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less. Hereinafter, unless otherwise specified, the compositions for controlling flying pests in the above first and second embodiments are also collectively referred to as "the composition of the present invention". The composition for controlling flying pests of the present invention has a function of reducing the flying ability by contacting the wings of flying pests, and suppresses the flight of flying pests, and harmlessizes them by mechanisms such as dropping flying pests that are flying or landing on walls or the like to the ground, thereby achieving the effect of controlling flying pests.

[0013] In the present invention, "flying pests" refers to pests that approach animals such as humans while flying and suck blood from their skin, pests that transmit pathogenic bacteria or the like while flying without sucking blood, pests that cause discomfort to humans just by flying, and the like. Specific examples of flying pests include mosquitoes such as Aedes albopictus, Aedes aegypti, Aedes japonicus, Culex tritaeniorhynchus, Culex pipiens pallens, Culex sitiens, Anopheles sinensis, Anopheles gambiae, Anopheles stephensi; midges such as Chironomus plumosus, Chironomus anthracinus; black flies such as Simulium nigrimanum, Simulium arcticum, Simulium aeneum; flies such as Musca domestica, Musca autumnalis, Fannia canicularis, Lucilia sericata, Chrysomya megacephala, Drosophila melanogaster, Delia antiqua, Drosophila suzukii, Drosophila immigrans, Drosophila hydei; horseflies such as Tabanus trigonus, Tabanus bovinus, Tabanus nigrovittatus, Tabanus yao; crane flies such as Tipula abdominalis, Tipula oleracea, Tipula aequina; bees such as Apis cerana, Apis mellifera, Vespa velutina, etc. Among these, the composition for controlling flying pests of the present invention has particularly excellent control effect against mosquitoes.

[0014] The "wing wetting agent" in the present invention means a wetting agent capable of wetting the wings of flying pests. More specifically, it is a component that exhibits the above-described control effect on flying pests by reducing the flying ability of flying pests by contacting and wetting their wings. More specifically, "wetting the wings of flying pests" refers to a state where the contact angle with respect to the wings of flying pests is 115° or less. From this perspective, the wing wetting agent in the present invention is such that the contact angle of the 3 mmol / kg aqueous solution with respect to the wings of flying pests is 115° or less, preferably 90° or less, more preferably 80° or less. And if the contact angle of the wing wetting agent with respect to the wings of flying pests is 90° or less, it can be determined that the action of wetting the wings of flying pests is excellent. Also, from the perspective of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests, the contact angle is preferably 30° or more, more preferably 40° or more, still more preferably 50° or more. The above contact angle is a value measured by the θ / 2 method using a contact angle meter under a 25°C environment, and specifically, it can be measured by the method described in the examples.

[0015] The composition of the present invention is used by spraying it as droplets with an average particle size of 20 μm or more and 400 μm or less. The average particle size means the volume median diameter (D50) of the droplets of the composition sprayed using a spray container or the like (hereinafter, also simply referred to as "spray droplets"). Specifically, the volume median diameter (D50) of the droplets is a value measured by the laser diffraction method using a spraytec laser diffraction system (Malvern Panalytical, model number: STP5921) for the spray droplets at a position 15 cm horizontally from the spray outlet of the spray container filled and discharged with the composition, and specifically, it can be measured by the method described in the examples. If the spray droplets of the composition, for which the average particle size (D50) measured by the above method at a position 15 cm horizontally from the spray outlet of the spray container is 20 μm or more and 400 μm or less, are applied to flying pests, flying pests can be efficiently controlled in actual use. Note that the volume median diameter (D50) in the present invention means the particle size at which the cumulative volume frequency calculated by the volume fraction becomes 50% when calculated from the smaller particle size.

[0016] The composition of the first aspect of the present invention contains a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution at 25°C in an amount of 0.01% by mass or more and 3.0% by mass or less, and is used by spraying as droplets having the above average particle size of 20 μm or more and 400 μm or less. The composition of the second aspect of the present invention is a composition for controlling flying pests having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less at 25°C, contains a wing wetting agent in an amount of 0.01% by mass or more and 3.0% by mass or less, and is used by spraying as droplets having an average particle size of 20 μm or more and 400 μm or less. The reason for obtaining the effects of the present invention is presumed as follows. When the wing wetting agent used in the composition of the present invention or the surface tension of the composition of the present invention at 25°C is 50.0 mN / m or less and the content of the wing wetting agent in the composition is within the above range, it has an excellent effect of wetting the wings of flying pests and improves the effect of reducing the flying ability. Further, when the wing wetting agent or the surface tension of the composition of the present invention at 25°C is 27.0 mN / m or more and the average particle size of the spray droplets of the composition is 20 μm or more and 400 μm or less, when the composition is sprayed on flying pests, the spray droplets tend to go straight without scattering up, down, left, or right, and can efficiently reach the flying pests. Therefore, it is considered that the above-described control effect on flying pests can be improved.

[0017] That is, the present invention controls flying pests by spraying a composition for controlling flying pests containing a wing wetting agent as droplets having the above predetermined average particle size on flying pests, wetting the wings of the flying pests, and reducing the flying ability. For example, when a composition for controlling flying pests is sprayed on a flying pest during flight, the wings of the flying pest get wet and it falls. Although the flying pest survives, it cannot fly and becomes harmless to humans. Therefore, the composition for controlling flying pests of the present invention is distinguished from, for example, an insecticide containing an insecticidal component. As described above, the composition for controlling flying pests of the present invention uses a wetting agent (wing wetting agent) capable of wetting the wings of flying pests as an active ingredient for controlling flying pests, and can be a composition for controlling flying pests with a high control effect without containing an insecticidal ingredient. Therefore, it has high safety for the human body and the environment. In addition, the composition for controlling flying pests of the present invention may be applied not only to flying pests during flight but also to flying pests that have landed on, for example, walls or the ground.

[0018] Furthermore, from the viewpoint of suppressing stickiness due to the adhesion of the sprayed composition to the sprayed surface, the content of the wing wetting agent in the composition is preferably 0.55% by mass or less, and the average particle diameter of the spray droplets of the composition is preferably 200 μm or less. The usage scene is not particularly limited. For example, when used indoors, stickiness on the floor, walls, etc. can be suppressed, and the handleability can be made better. Hereinafter, the composition for controlling flying pests and the spray container of the present invention will be described in detail.

[0019] <Composition for Controlling Flying Pests> The composition for controlling flying pests according to the first aspect of the present invention contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension at 25 °C of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution. The composition for controlling flying pests according to the second aspect of the present invention contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent, and is used by spraying as droplets having an average particle diameter of 20 μm or more and 400 μm or less, and is a composition for controlling flying pests having a surface tension at 25 °C of 27.0 mN / m or more and 50.0 mN / m or less. From the viewpoint of using the composition for controlling flying pests by spraying it on flying pests, it is preferable that the composition for controlling flying pests further contains water as a medium for dissolving or dispersing the wing wetting agent, which is an active ingredient for controlling flying pests, as described later.

[0020] (Wing Wetting Agent) As described above, the wing wetting agent in the present invention means a wetting agent capable of wetting the wings of flying pests. The wing wetting agent used in the composition of the first aspect has a surface tension at 25°C of 3 mmol / kg aqueous solution of 27.0 mN / m or more and 50.0 mN / m or less. When the surface tension of the wing wetting agent is within the above range, it is excellent in the action of wetting the wings of flying pests, the effect of reducing the flying ability is enhanced, and when the composition is sprayed, the spray droplets tend to go straight without scattering up, down, left or right, and can efficiently reach the flying pests. The surface tension at 25°C of the wing wetting agent is defined as the surface tension of a 3 mmol / kg aqueous solution. This is because the surface tension at this concentration can measure the surface tension derived from the wing wetting agent itself without being affected by other organic solvents or the like. From the viewpoint of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests, the surface tension is preferably 27.5 mN / m or more, more preferably 28.0 mN / m or more, still more preferably 29.0 mN / m or more, and even more preferably 29.5 mN / m or more. Also, from the viewpoint of being excellent in the action of wetting the wings of flying pests and enhancing the control effect by reducing the flying ability, the surface tension is preferably 45.0 mN / m or less, more preferably 40.0 mN / m or less, still more preferably 33.0 mN / m or less, and even more preferably 31.0 mN / m or less. And the surface tension at 25°C of the 3 mmol / kg aqueous solution of the wing wetting agent used in the composition of the first aspect of the present invention is 27.0 to 50.0 mN / m, preferably 27.0 to 45.0 mN / m, more preferably 27.0 to 40.0 mN / m, still more preferably 27.5 to 40.0 mN / m, even more preferably 28.0 to 33.0 mN / m, even more preferably 29.0 to 31.0 mN / m, and even more preferably 29.5 to 31.0 mN / m. It is also preferable that the wing wetting agent used in the composition of the second aspect of the present invention has a surface tension at 25°C of 3 mmol / kg aqueous solution within the above range. The surface tension is the value of the surface tension of an aqueous solution of the wing wetting agent at 3 mmol / kg measured by the Wilhelmy method under a 25°C environment, and specifically, it can be measured by the method described in the examples. Further, when the wing wetting agent is composed of two or more components, the surface tension value of the wing wetting agent is determined as a weighted average value with the blending ratio of each component as the weight based on the surface tension values of the 3 mmol / kg aqueous solutions of the respective components. In addition, even if the surface tension of a 3 mmol / kg aqueous solution at 25°C is less than 27.0 mN / m or exceeds 50.0 mN / m when alone, if the surface tension as a wing wetting agent composed of two or more components is in the range of 27.0 mN / m or more and 50.0 mN / m or less, the flying pest control effect is exhibited.

[0021] The wing wetting agent in the present invention only needs to have a surface tension within the specific range. However, from the viewpoint of spraying the flying pest control composition onto flying pests for use, the wing wetting agent is preferably a water-soluble or water-dispersible compound that can be dissolved or dispersed in an aqueous medium such as water. Among water-soluble or water-dispersible compounds, from the viewpoints of facilitating adjustment to a viscosity suitable for spraying the flying pest control composition and controlling the average particle diameter of the spray droplets of the composition within a specific range, the molecular weight of the wing wetting agent is preferably 1,500 or less, more preferably 1,000 or less, still more preferably 800 or less, and even more preferably 600 or less. The lower limit value of the molecular weight of the wing wetting agent is not particularly limited, but from the viewpoints of controlling the average particle diameter of the spray droplets of the composition within a specific range and suppressing the volatilization of the wing wetting agent, it is preferably 150 or more, more preferably 200 or more.

[0022] As compounds used as the wing wetting agent in the present invention, examples thereof include compounds known as surfactants in general and having a surface tension within the above range. Among surfactants, from the viewpoint of safety to the human body and the environment, it is preferably included one or more selected from the group consisting of nonionic surfactants, anionic surfactants, and cationic surfactants, more preferably included one or more selected from the group consisting of nonionic surfactants and anionic surfactants, still more preferably included a nonionic surfactant, and even more preferably is a nonionic surfactant.

[0023] 〔Nonionic surfactant〕 The nonionic surfactant used as a wing wetting agent is preferably a nonionic surfactant having an HLB (hydrophile-lipophile balance) value of 18.0 or less from the viewpoint of excellent action of wetting the wings of flying pests. The HLB value is more preferably 16.0 or less, still more preferably 15.0 or less. Further, from the viewpoint of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests, the HLB value is preferably 7.0 or more, more preferably 8.5 or more, still more preferably 10.0 or more, and even more preferably 11.5 or more. Here, the HLB value is a value indicating the affinity of the surfactant for water and oil, and can be obtained from the following formula by the Griffin method. When the nonionic surfactant consists of two or more components, the HLB is determined as a weighted average value based on the HLB values of the respective components with the blending ratio of each component as the weight. In the following formula, examples of the "hydrophilic group contained in the surfactant" include a hydroxy group and an ethyleneoxy group. HLB = 20 × [(total formula weight of hydrophilic groups contained in the surfactant) / (molecular weight of the surfactant)]

[0024] Specific examples of the nonionic surfactant include polyoxyalkylene alkyl ether, polyoxyalkylene sorbitan fatty acid ester, alkyl glucoside, alkyl glyceryl ether, polyglycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, alkylamine oxide, and polyoxyethylene-modified silicone, etc., and one or two or more of these can be used. Among these, from the viewpoints of excellent effect of wetting the wings of flying pests and enhancing the straightness of the spray droplets of the composition to efficiently control flying pests, at least one selected from the group consisting of polyoxyalkylene alkyl ethers, alkyl glucosides, and alkyl glyceryl ethers is preferable, and at least one selected from the group consisting of polyoxyalkylene alkyl ethers and alkyl glucosides is more preferable.

[0025] As the polyoxyalkylene alkyl ether, a compound represented by the following general formula (1) is preferable. R 1 -O-(Y) m -H (1) 〔In formula (1), R 1 represents an alkyl group, and Y represents an oxyethylene unit and / or an oxypropylene unit. m represents the average number of added moles of Y.〕 In general formula (1), from the viewpoints of excellent effect of wetting the wings of flying pests and enhancing the straightness of the spray droplets of the composition to efficiently control flying pests, the number of carbon atoms of the alkyl group constituting R 1 is preferably 8 or more and 22 or less, more preferably 8 or more and 18 or less, still more preferably 8 or more and 14 or less. The alkyl group may be either a linear alkyl group or a branched alkyl group, but a linear alkyl group is preferable from the viewpoint of reducing the surface tension and having an excellent effect of wetting the wings of flying pests. Also, Y represents an oxyethylene unit and / or an oxypropylene unit, and Y is preferably an oxyethylene unit. m represents the average number of added moles of Y, and from the viewpoint of enhancing the straightness of the spray droplets of the composition to efficiently control flying pests, it is preferably 4 or more, more preferably 6 or more. Also, from the viewpoint of excellent effect of wetting the wings of flying pests, the average number of added moles is preferably 30 or less, more preferably 20 or less, still more preferably 15 or less, even more preferably 12 or less, and even more preferably 10 or less. The polyoxyalkylene alkyl ether is more preferably polyoxyethylene lauryl ether in which the average number of added moles of oxyethylene groups is 6 or more and 10 or less.

[0026] As the alkyl glucoside, those having an alkyl group with 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, and still more preferably 8 to 14 carbon atoms are preferable. The alkyl group may be either a linear alkyl group or a branched alkyl group. Specific examples of the alkyl glucoside include octyl glucoside, 2-ethylhexyl glucoside, nonyl glucoside, decyl glucoside, isodecyl glucoside, lauryl glucoside, tridecyl glucoside, myristyl glucoside, stearyl glucoside, isostearyl glucoside, and mixtures of two or more thereof. Among these, one or more selected from the group consisting of decyl glucoside, lauryl glucoside, and myristyl glucoside are preferable.

[0027] As the alkyl glyceryl ether, those having an alkyl group with 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, and still more preferably 8 to 14 carbon atoms are preferable. The alkyl group may be either a linear alkyl group or a branched alkyl group, but a branched alkyl group is preferable from the viewpoint of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests. Specific examples of the alkyl glyceryl ether 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, one or more selected from the group consisting of 2-ethylhexyl glyceryl ether, decyl glyceryl ether, isodecyl glyceryl ether, and lauryl glyceryl ether are preferable, and one or more selected from the group consisting of 2-ethylhexyl glyceryl ether and isodecyl glyceryl ether are more preferable.

[0028] [Anionic surfactant] The anionic surfactants used as wing wetting agents include alkylbenzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, alkyl sulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfo fatty acid salts, N-acyl amino acids, phosphoric acid mono- or diesters, sulfosuccinic acid esters, etc. whose surface tension is within the above range, and one or more of these can be used. As counterions of the anionic groups of the anionic surfactants, there are alkali metal ions such as sodium ions and potassium ions; alkaline earth metal ions such as calcium ions and magnesium ions; ammonium ions; alkanolammonium having 1 to 3 alkanol groups with 2 or 3 carbon atoms (for example, monoethanolammonium, diethanolammonium, triethanolammonium, triisopropanolammonium, etc.). From the viewpoints of excellent action of wetting the wings of flying pests and enhancing the straightness of the spray droplets of the composition to efficiently control flying pests, as the anionic surfactant, one or more selected from the group consisting of alkyl sulfates, alkyl ether sulfates and alkyl ether carboxylates are preferred, and alkyl sulfates are more preferred. Examples of the alkyl sulfate include sodium lauryl sulfate and ammonium lauryl sulfate. Examples of the alkyl ether sulfate include polyoxyethylene alkyl ether sulfates such as sodium lauryl ether sulfate, and examples of the alkyl ether carboxylate include polyoxyethylene alkyl ether acetates such as sodium lauryl ether acetate.

[0029] 〔Cationic surfactant〕 The cationic surfactants used as wing wetting agents are alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylamidopropyltrimethylammonium salts, benzalkonium chloride, alkylpyridinium salts, alkyldimethylamines and their salts, alkoxyalkyldimethylamines and their salts, alkylamidopropyldimethylamines and their salts, diethanolamine monoalkyl esters and their salts, triethanolamine monoalkyl esters and their salts, triethanolamine dialkyl esters and their salts, etc. whose surface tension is within the above range.

[0030] The alkyl groups in alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylpyridinium salts, alkyldimethylamines and their salts, alkoxyalkyldimethylamines and their salts are preferably 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, from the viewpoint of excellent action of wetting the wings of flying pests and from the viewpoint of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests. The alkyl groups in alkylamidopropyltrimethylammonium salts, alkylamidopropyldimethylamines and their salts, diethanolamine monoalkyl esters and their salts, triethanolamine monoalkyl esters and their salts, triethanolamine dialkyl esters and their salts are preferably 7 to 21 carbon atoms, more preferably 7 to 17 carbon atoms, from the viewpoint of excellent action of wetting the wings of flying pests and from the viewpoint of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests.

[0031] As counterions of the cationic groups in alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylamidoalkyltrimethylammonium salts, and alkylpyridinium salts, there may be mentioned alkyl sulfate ions having 1 to 3 carbon atoms, sulfate ions, phosphate ions, carboxylic acid 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 availability of raw materials, halide ions are preferred, and chloride ions are more preferred.

[0032] Alkyldimethylamine, alkoxyalkyldimethylamine, alkylamidalkyldimethylamine, diethanolamine monoalkyl ester, triethanolamine monoalkyl ester, and triethanolamine dialkyl ester may be reacted with an acid in advance to form a salt and then incorporated into the composition, or may be incorporated into the composition as they are and an acid may be further incorporated into the composition to form a salt in the composition. Therefore, here, the above amines, alkyl esters, and their salts are defined as cationic surfactants. Also, their content is converted in terms of the mass of the above amines and alkyl esters. Salts of alkyldimethylamine, alkoxyalkyldimethylamine, alkylamidalkyldimethylamine, diethanolamine monoalkyl ester, triethanolamine monoalkyl ester, and triethanolamine dialkyl ester 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; acidic amino acids such as glutamic acid and aspartic acid. Examples of inorganic acids include hydrochloric acid, sulfuric acid, and phosphoric acid.

[0033] From the perspective of excellent effect of wetting the wings of flying pests and from the perspective of enhancing the straightness of the spray droplets of the composition to efficiently control flying pests, as the cationic surfactant, benzalkonium chloride is preferably used.

[0034] The wing wetting agent can be used alone or in combination of two or more. When the wing wetting agent contains a nonionic surfactant, from the perspective of excellent effect of wetting the wings of flying pests, the content of the nonionic surfactant in the wing wetting agent is preferably 50% by mass or more, more preferably 70% by mass or more, still more preferably 80% by mass or more, even more preferably 90% by mass or more, even more preferably 95% by mass or more, and also 100% by mass or less, and most preferably substantially 100% by mass. As the components other than the nonionic surfactant in the wing wetting agent, preferably one or more selected from the group consisting of the anionic surfactant and the cationic surfactant, more preferably the anionic surfactant is mentioned.

[0035] From the perspective of excellent wetting effect on the wings of flying pests, the content of the wing wetting agent in the composition for controlling flying pests of the present invention is 0.01% by mass or more, preferably 0.02% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.08% by mass or more, and even more preferably 0.10% by mass or more. Also, from the perspective of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests, it is 3.0% by mass or less, preferably 2.0% by mass or less, more preferably 1.0% by mass or less, still more preferably 0.80% by mass or less, and even more preferably 0.55% by mass or less, and even more preferably 0.40% by mass or less from the perspective of suppressing stickiness caused by the adhesion of the sprayed composition to the sprayed surface when using the composition for controlling flying pests. And the content of the wing wetting agent in the composition for controlling flying pests of the present invention is 0.01 - 3.0% by mass, preferably 0.02 - 2.0% by mass, more preferably 0.05 - 1.0% by mass, still more preferably 0.08 - 1.0% by mass, and even more preferably 0.10 - 0.80% by mass. Also, from the perspective of suppressing stickiness caused by the adhesion of the sprayed composition to the sprayed surface when using the composition for controlling flying pests, it is preferably 0.01 - 0.55% by mass, more preferably 0.01 - 0.40% by mass, and more preferably 0.10 - 0.40% by mass from the perspective of excellent wetting effect on the wings of flying pests.

[0036] The composition for controlling flying pests of the present invention preferably further contains an aqueous medium as a medium for dissolving or dispersing the wing wetting agent, which is an active ingredient for controlling flying pests. From the perspective of safety to the human body and the environment and adjusting the spray droplets within a predetermined range, water is preferred as the aqueous medium. The water content in the composition is preferably 80% by mass or more, more preferably 90% by mass or more, still more preferably 97% by mass or more, and even more preferably 99% by mass or more, and preferably 99.99% by mass or less, and more preferably 99.9% by mass or less. In addition, from the viewpoint of suppressing stickiness caused by the adhesion of the sprayed composition to the surface to be sprayed, the content ratio of the wing wetting agent to the water content in the composition (wing wetting agent / water), as a mass ratio, is preferably 0.02 or less, more preferably 0.01 or less.

[0037] (Other components) The composition for controlling flying pests can also contain components other than those described above, such as preservatives, colorants, fragrances, pH adjusters, etc., within a range that does not impair the effects of the invention. Further, it may contain aqueous media other than water, such as alcohols having 1 to 5 carbon atoms, such as methanol, ethanol, isopropyl alcohol, and butyl alcohol; diols and triols having 6 or less carbon atoms, such as 1,3-butylene glycol, glycerin, ethylene glycol, and propylene glycol. However, from the viewpoint of obtaining the effects of the present invention, the content of components other than the wing wetting agent and water in the composition for controlling flying pests is preferably 20% by mass or less, more preferably 15% by mass or less, still more preferably 10% by mass or less, even more preferably 5% by mass or less, even more preferably 1% by mass or less, even more preferably 0.5% by mass or less, and even more preferably 0.1% by mass or less. In particular, the ethanol content in the composition for controlling flying pests is preferably 0.2% by mass or less, more preferably 0.1% by mass or less.

[0038] The composition for controlling flying pests preferably does not contain an insecticidal component from the viewpoint of safety to the human body and the environment. The composition for controlling flying pests in the present invention uses a wing wetting agent capable of wetting the wings of flying pests as an active ingredient for controlling flying pests, and can be a composition with a high flying pest control effect even without containing an insecticidal component. Examples of the insecticidal component referred to here include pyrethroid insecticides, organophosphorus insecticidal components, and carbamate insecticidal components. 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, silafluofen, d,d-T-silafluofen, empenthrin, permethrin, phenothrin, etofenprox, pyrethrin, and the like. 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 hexythiazox, and neonicotinoid insecticides such as imidacloprid, dinotefuran, and clothianidin. Moreover, "not containing an insecticidal component" means that the content of the insecticidal component in the composition for controlling flying pests is less than 1% by mass, preferably 0.1% by mass or less, more preferably 0.01% by mass or less, still more preferably 0.001% by mass or less, and most preferably substantially not contained.

[0039] From the viewpoint of safety to the human body and the environment, the composition for controlling flying pests of the present invention preferably does not contain a bactericide. Examples of the bactericide herein include amphoteric surfactants having a bactericidal effect. "Not containing a bactericide" means that the content of the bactericide in the composition for controlling flying pests is less than 0.1% by mass, preferably 0.05% by mass or less, more preferably 0.01% by mass or less, still more preferably 0.005% by mass or less, and most preferably substantially not contained.

[0040] The composition for controlling flying pests of the present invention preferably has a low content of a polymer compound from the viewpoints of facilitating adjustment to a viscosity suitable for spraying the composition for controlling flying pests, controlling the average particle diameter of the spray droplets of the composition within a specific range, and suppressing stickiness caused by adhesion of the sprayed composition to the surface to be sprayed when using the composition for controlling flying pests. For example, the content of the (meth)acrylic acid alkyl ester copolymer in the composition for controlling flying pests is preferably less than 0.5% by mass, more preferably less than 0.1% by mass, still more preferably 0.07% by mass or less, and even more preferably 0.05% by mass or less. The above (meth)acrylic acid alkyl ester copolymer means a polymer compound obtained by copolymerizing (meth)acrylic acid alkyl esters, and particularly, a film-forming (meth)acrylic acid alkyl ester copolymer is applicable. The film-forming (meth)acrylic acid alkyl ester copolymer may be any of cationic, anionic, nonionic, and amphoteric polymer compounds. Examples of the amphoteric polymer compound among the film-forming (meth)acrylic acid alkyl ester copolymers include N-methacryloyloxyethyl N,N-dimethylammonium-α-N-methylcarboxybetaine·methacrylic acid alkyl ester copolymer (such as "Yukafoamer 202", "Yukafoamer 104D", "Yukafoamer AMPHOSET", "Yukafoamer R205S", "Yukafoamer SM", etc. manufactured by Mitsubishi Chemical Corporation), octylacrylamide·hydroxypropyl acrylate·butylaminoethyl methacrylate copolymer, N-methacryloyloxyethyl N,N-dimethylaminoethyl-α-N-methylcarboxybetaine·methacrylic acid alkyl ester copolymer, and the like. In the composition of the present invention, when the content of the film-forming (meth)acrylic acid alkyl ester copolymer is low, the increase in the viscosity of the composition can be suppressed. Therefore, when a trigger spray type container is used as the spray container, the speed of pulling the trigger does not decrease and is stabilized. When the speed of pulling the trigger is high, the pressure applied to the droplets becomes high, so the spray droplets of the composition tend to be small. Further, when the speed of pulling the trigger is stabilized, when the liquid film of the composition is scattered into droplets by the spinning force, the spray droplets tend to be small, and the particle size control becomes easy. When the composition of the present invention contains a (meth)acrylic acid alkyl ester copolymer, from the viewpoint of suppressing stickiness due to the adhesion of the sprayed composition to the sprayed surface when using the composition for controlling flying pests, the content of the wing wetting agent in the composition for controlling flying pests is preferably 1.0% by mass or less, more preferably 0.8% by mass or less.

[0041] When the composition for controlling flying pests of the present invention is filled and used in an aerosol type container filled with a propellant, which will be described later, the content of each component in the composition of the present invention means the mass% in the total amount excluding the propellant.

[0042] From the viewpoint of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests, the composition of the second aspect of the present invention has a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less. Since the surface tension of the composition of the second aspect is within the above range, it is excellent in the action of wetting the wings of flying pests, the effect of reducing the flying ability is enhanced, and when the composition is sprayed, the spray droplets tend to travel straight without scattering up, down, left, or right, and can efficiently reach flying pests. From the viewpoint of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests, the surface tension is preferably 27.5 mN / m or more, more preferably 28.0 mN / m or more, still more preferably 29.0 mN / m or more, and even more preferably 29.5 mN / m or more. Also, from the viewpoint of being excellent in the action of wetting the wings of flying pests and reducing the flying ability to enhance the control effect, the surface tension is preferably 45.0 mN / m or less, more preferably 40.0 mN / m or less, still more preferably 33.0 mN / m or less, and even more preferably 31.0 mN / m or less. And the surface tension at 25°C of the composition of the second aspect of the present invention is 27.0 to 50.0 mN / m, preferably 27.0 to 45.0 mN / m, more preferably 27.0 to 40.0 mN / m, still more preferably 27.5 to 40.0 mN / m, even more preferably 28.0 to 33.0 mN / m, even more preferably 29.0 to 31.0 mN / m, and even more preferably 29.5 to 31.0 mN / m. It is also preferable that the composition of the first aspect of the present invention has a surface tension within the above range at 25°C. The surface tension of the composition can be measured by the same method as described above, and is measured by the Wilhelmy method under a 25°C environment. Specifically, it can be measured by the method described in the examples.

[0043] From the viewpoint of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests, the kinematic viscosity at 25°C of the composition for controlling flying pests of the present invention is preferably 0.8 mm 2 / s or more, more preferably 0.9 mm 2 / s or more, and from the viewpoint of enhancing the flight of the spray droplets of the composition and efficiently controlling flying pests, it is preferably 2.5 mm 2 / s or less, more preferably 2.0 mm 2 / s or less, still more preferably 1.5 mm 2 / s or less. The kinematic viscosity can be measured by an Ubbelohde viscometer, and specifically, it can be measured by the method described in the examples.

[0044] The method for producing the composition for controlling flying pests of the present invention is not particularly limited. For example, it can be produced by blending a wing wetting agent, water, and other components used as necessary, and mixing them using a known stirring device or the like.

[0045] <Spray droplets> The composition for controlling flying pests of the present invention is used by spraying it as droplets with an average particle size of 20 μm or more and 400 μm or less. When the composition is sprayed as droplets of this average particle size onto flying pests, the sprayed droplets tend to travel straight without scattering vertically, horizontally, or laterally, and can efficiently reach the flying pests. Therefore, it is considered that the control effect on flying pests can be improved. As described above, the average particle size of the sprayed droplets of the composition for controlling flying pests is the volume median diameter (D50) of the droplets of the composition sprayed using a spraying container or the like, and for the sprayed droplets at a position 15 cm horizontally from the spray outlet of the spray container filled with and discharging the composition, it is a value measured by the laser diffraction method using a spraytec laser diffraction system (Malvern Panalytical, model number: STP5921), and specifically, it can be measured by the method described in the examples.

[0046] From the viewpoint of enhancing the straightness of the sprayed droplets of the composition and efficiently controlling flying pests, the average particle size of the sprayed droplets is 20 μm or more, preferably 30 μm or more, more preferably 50 μm or more, and even more preferably 70 μm or more. From the viewpoint of enhancing the scatterability of the sprayed droplets of the composition and efficiently controlling flying pests, it is 400 μm or less, preferably 300 μm or less. Further, from the viewpoint of suppressing stickiness due to the adhesion of the sprayed composition to the sprayed surface when using the composition for controlling flying pests of the present invention, it is more preferably 200 μm or less, and even more preferably 170 μm or less.

[0047] It is more preferable that the volume particle size distribution of the sprayed droplets of the composition for controlling flying pests satisfies the following requirements. From the viewpoint of enhancing the straightness of the sprayed droplets of the composition and efficiently controlling flying pests, in the distribution curve of the droplet particles of the sprayed droplets measured by the laser diffraction method using a spraytec laser diffraction system (Malvern Panalytical, model number: STP5921), the ratio of the sprayed droplets with a particle size of 10 μm or less to the total volume of the droplet particles is preferably 15% or less, more preferably 10% or less, and even more preferably 5% or less. From the viewpoint of enhancing the straightness of the spray droplets of the composition and efficiently controlling flying pests, the ratio of the spray droplets with a particle size of 30 μm or less to the total volume of the droplet particles is preferably 15% or less, more preferably 10% or less, and even more preferably 5% or less. On the other hand, from the viewpoint of suppressing stickiness due to the adhesion of the sprayed composition to the sprayed surface when using the composition for controlling flying pests, the ratio of the spray droplets with a particle size of 500 μm or more to the total volume of the droplet particles is preferably 10% or less, more preferably 5% or less, and even more preferably 1% or less. Also, from the viewpoint of suppressing stickiness due to the adhesion of the sprayed composition to the sprayed surface when using the composition for controlling flying pests, the ratio of the spray droplets with a particle size of 300 μm or more to the total volume of the droplet particles is preferably 35% or less, more preferably 30% or less, and even more preferably 25% or less. The volume particle size distribution of the spray droplets of the composition for controlling flying pests can be measured by the laser diffraction method in the same manner as the average particle size of the spray droplets, and specifically, it can be measured by the method described in the examples.

[0048] The volume median diameter (D50) and the volume particle size distribution of the spray droplets of the composition for controlling flying pests of the present invention can be controlled, for example, by the surface tension and content of the wing wetting agent used in the composition, the nozzle diameter of the spray container used, the discharge amount, and combinations thereof.

[0049] As a method of spraying the composition as droplets with an average particle size of 20 μm or more and 400 μm or less, a method of filling the composition into a spray container described below and spraying it can be mentioned.

[0050] [Spray for Controlling Flying Pests] The present invention also provides a spray for controlling flying pests in a first aspect, which is filled with a composition for controlling flying pests in a spray container, the composition contains a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less at 25 °C in a 3 mmol / kg aqueous solution in an amount of 0.01% by mass or more and 3.0% by mass or less, and is sprayed as droplets with an average particle size of 20 μm or more and 400 μm or less. The present invention also provides a spray for controlling flying pests, which is filled in a spray container, wherein the composition has a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less, contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. Hereinafter, unless otherwise specified, the sprays for controlling flying pests in the first and second embodiments are also collectively referred to as "the spray for controlling flying pests of the present invention". The spray in the present invention is composed of a composition for controlling flying pests and a spray container. The composition for controlling flying pests used in the sprays for controlling flying pests in the first and second embodiments and its preferred embodiments are the same as the compositions for controlling flying pests in the first and second embodiments described above, respectively. By using the spray for controlling flying pests having the above configuration, it has the effect of wetting the wings of flying pests and reducing their flying ability, and can efficiently control flying pests.

[0051] <Spray container> The spray container used in the spray for controlling flying pests of the present invention is not particularly limited as long as it can be filled with the composition for controlling flying pests and sprayed onto flying pests in the form of spray droplets having an average particle size within a specific range. Examples of such spray containers include extrusion spray containers such as trigger spray type containers; aerosol type containers filled with a propellant; and the like. The capacity of the spray container is not particularly limited, but from the viewpoint of spraying towards flying pests, it is usually 50 mL or more and 500 mL or less. The spray outlet diameter of the spray container is preferably 0.1 mm or more, more preferably 0.3 mm or more, from the viewpoint of easily controlling the average particle size of the spray droplets of the composition within a specific range, and preferably 1.5 mm or less, more preferably 1.0 mm or less, from the same viewpoint. The "spray outlet diameter of the spray container" means the maximum diameter at the inner diameter of the tip of the injection nozzle of the spray container. The shape of the discharge port is not particularly limited, but a circular or elliptical shape is preferred.

[0052] As the spray container, from the viewpoint of easily controlling the average particle diameter of the spray droplets of the composition within a specific range, an extrusion spray container is preferable, a trigger spray type container is more preferable, and a trigger spray type container having a spray outlet diameter within the above range is even more preferable. From the viewpoint of easily controlling the average particle diameter of the spray droplets of the composition within a specific range, among trigger spray type containers, a pressure accumulation type trigger spray container is even more preferable. A pressure accumulation type spray container generally has a structure in which a piston is slid with respect to a cylinder housed inside the container, and the liquid inside the cylinder exceeding a certain pressure is ejected from a nozzle. That is, since the liquid is ejected outside the container only when the hydraulic pressure inside the cylinder exceeds a certain pressure, it is advantageous in terms of controlling the particle diameter of the ejected droplets. Examples of the pressure accumulation type trigger spray container include the container described in JP-A-2017-226474.

[0053] Further, the trigger spray type container may be provided with a foam forming mechanism, but from the viewpoint of easily controlling the average particle diameter of the spray droplets of the composition within a specific range, it is preferable that it does not have a foam forming mechanism. Here, the "foam forming mechanism" specifically means the mechanism of the following (1) or (2). (1) A mechanism having a plate-like body or a mesh-like impact wall provided with protrusions, arranged perpendicular to the ejection direction at the ejection port of the container, and causing the liquid ejected in a mist form to collide with the plate-like body or the barrier, thereby mixing with air and forming a foam. (2) A mechanism having an outside air introduction hole near the ejection port of the container, in which the liquid ejected in a mist form and the introduced outside air are mixed inside the container, and foam is generated by colliding with the cylindrical inner wall surface or the like, and is ejected forward from the ejection port in a foam form. Specific examples of the above (1) include the mechanisms described in FIG. 15 of JP-A-2003-112090, JP-A-2011-251218, and FIG. 2 of JP-A-2006-320845. Specific examples of the above (2) include the mechanisms described in FIG. 2 of JP-A-2007-167719, FIG. 2 of JP-A-2006-150279, and FIG. 2 of JP-B-52-116919.

[0054] A trigger spray-type container having no foam-forming mechanism refers to a trigger spray-type container structured to eject a liquid as droplets from the ejection port of a nozzle to the outside of the container without passing through the foam-forming mechanism, and preferably refers to a trigger spray-type container structured to eject directly as droplets from the ejection port of the nozzle to the outside of the container. As the external shape of the spray droplets ejected from a trigger spray-type container having no foam-forming mechanism, preferably, no bubbles having a size of 100 μm or more are observed one minute after a single full-stroke spray toward a wall located at a horizontal distance of 30 cm from the ejection port of the container at room temperature (25°C). More preferably, no bubbles having a size of 100 μm or more are observed 0.5 minutes after a single full-stroke spray toward a wall located at a horizontal distance of 30 cm from the ejection port of the container.

[0055] From the viewpoint of efficiently controlling flying pests by allowing a sufficient amount of spray droplets of the composition to reach the flying pests, the discharge amount of the composition for controlling flying pests by a trigger spray-type container is preferably 0.2 g or more, more preferably 0.5 g or more, and even more preferably 0.7 g or more per trigger operation. Further, from the viewpoint of suppressing stickiness due to the sprayed composition adhering to the sprayed surface when using a flying pest control spray, it is preferably 2.0 g or less, more preferably 1.5 g or less, and even more preferably 1.2 g or less per trigger operation. On the other hand, from the viewpoint of efficiently controlling flying pests by allowing a sufficient amount of the spray droplets of the composition for controlling flying pests in the aerosol container to reach the flying pests, the discharge amount when spraying for 1 second is preferably 0.2 g or more, more preferably 0.5 g or more, still more preferably 0.7 g or more. Further, from the viewpoint of suppressing stickiness due to the sprayed composition adhering to the sprayed surface when using the flying pest control spray, it is preferably 2.0 g or less, more preferably 1.5 g or less, still more preferably 1.2 g or less.

[0056] The present invention further provides a spray for suppressing flying of flying pests filled with a composition for suppressing flying of flying pests in a spray container, wherein the composition contains a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less at 25°C in a 3 mmol / kg aqueous solution in an amount of 0.01% by mass or more and 3.0% by mass or less, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less; and a spray for causing flying pests to fall filled with a composition for causing flying pests to fall in a spray container, wherein the composition contains a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less at 25°C in a 3 mmol / kg aqueous solution in an amount of 0.01% by mass or more and 3.0% by mass or less, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. The composition, spray container, and preferred embodiments thereof used in these sprays are the same as those of the flying pest control spray in the first aspect described above.

[0057] The present invention further provides a spray for suppressing the flight of flying pests, which is filled with a composition for suppressing the flight of flying pests in a spray container, wherein the composition has a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less, contains a wing wetting agent in an amount of 0.01% by mass or more and 3.0% by mass or less, and is sprayed as droplets having an average particle diameter of 20 μm or more and 400 μm or less; and a spray for causing flying pests to fall, which is filled with a composition for causing flying pests to fall in a spray container, wherein the composition has a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less, contains a wing wetting agent in an amount of 0.01% by mass or more and 3.0% by mass or less, and is sprayed as droplets having an average particle diameter of 20 μm or more and 400 μm or less. The composition, spray container, and preferred embodiments thereof used in these sprays are the same as those of the spray for controlling flying pests in the second embodiment described above.

[0058] Regarding the above-described embodiments, the present invention further discloses the following embodiments. <1> A composition for controlling flying pests, which contains a wing wetting agent having a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less in an aqueous solution of 3 mmol / kg in an amount of 0.01% by mass or more and 3.0% by mass or less, further contains water in an amount of 80% by mass or more and 99.99% by mass or less, and is used by spraying as droplets having an average particle diameter of 20 μm or more and 400 μm or less. <2> A composition for controlling flying pests, which contains a wing wetting agent in an amount of 0.01% by mass or more and 3.0% by mass or less, is used by spraying as droplets having an average particle diameter of 20 μm or more and 400 μm or less, and has a surface tension at 25°C of 27.0 mN / m or more and 50.0 mN / m or less. <3> The composition according to <2>, wherein the surface tension at 25°C of an aqueous solution of 3 mmol / kg of the wing wetting agent is preferably 27.0 mN / m or more and 50.0 mN / m or less. <4> The surface tension at 25°C of the 3 mmol / kg aqueous solution of the wing wetting agent is preferably 27.5 mN / m or more, more preferably 28.0 mN / m or more, still more preferably 29.0 mN / m or more, even more preferably 29.5 mN / m or more, and preferably 45.0 mN / m or less, more preferably 40.0 mN / m or less, still more preferably 33.0 mN / m or less, even more preferably 31.0 mN / m or less. The composition according to any one of <1> to <3>. <5> The content of the wing wetting agent is preferably 0.02% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.08% by mass or more, even more preferably 0.10% by mass or more, and preferably 2.0% by mass or less, more preferably 1.0% by mass or less, still more preferably 0.80% by mass or less, even more preferably 0.55% by mass or less, even more preferably 0.40% by mass or less. The composition according to any one of <1> to <4>. <6> The average particle diameter of the droplets is preferably 30 μm or more, more preferably 50 μm or more, and preferably 300 μm or less, more preferably 200 μm or less, still more preferably 170 μm or less. The composition according to any one of <1> to <5>. <7> The wing wetting agent preferably contains one or more selected from the group consisting of nonionic surfactants, anionic surfactants, and cationic surfactants, more preferably contains one or more selected from the group consisting of nonionic surfactants and anionic surfactants, still more preferably contains a nonionic surfactant, and even more preferably is a nonionic surfactant. The composition according to any one of <1> to <6>. <8> The HLB value of the nonionic surfactant is preferably 18.0 or less, more preferably 16.0 or less, still more preferably 15.0 or less, and preferably 7.0 or more, more preferably 8.5 or more, still more preferably 10.0 or more, even more preferably 11.5 or more. The composition according to <7>. <9> The composition according to <7> or <8>, wherein the nonionic surfactant is at least one selected from the group consisting of polyoxyalkylene alkyl ethers, alkyl glucosides, and alkyl glyceryl ethers. <10> The composition according to <9>, wherein the polyoxyalkylene alkyl ether is a compound represented by the following general formula (1). R 1 -O-(Y)m-H (1) 〔In formula (1), R 1 represents an alkyl group, preferably a linear alkyl group or a branched alkyl group having 8 or more and 22 or less carbon atoms, more preferably 8 or more and 18 or less carbon atoms, still more preferably 8 or more and 14 or less carbon atoms, even more preferably a linear alkyl group having 8 or more and 22 or less carbon atoms, more preferably 8 or more and 18 or less carbon atoms, still more preferably 8 or more and 14 or less carbon atoms. Y represents an oxyethylene unit and / or an oxypropylene unit, preferably an oxyethylene unit. m represents the average number of moles of addition of Y, preferably 4 or more, more preferably 6 or more, preferably 30 or less, more preferably 20 or less, still more preferably 15 or less, even more preferably 12 or less, and even more preferably 10 or less.〕 <11> The composition according to <10>, wherein the polyoxyalkylene alkyl ether is polyoxyethylene lauryl ether having an average number of moles of addition of the oxyethylene group of 6 or more and 10 or less. <12> The composition according to <9>, wherein the alkyl glucoside is at least one selected from the group consisting of octyl glucoside, 2-ethylhexyl glucoside, nonyl glucoside, decyl glucoside, isodecyl glucoside, lauryl glucoside, tridecyl glucoside, myristyl glucoside, stearyl glucoside, isostearyl glucoside, and a mixture of two or more thereof, preferably at least one selected from the group consisting of decyl glucoside, lauryl glucoside, and myristyl glucoside.

[0059] <13> The composition according to <9>, wherein the alkyl glyceryl ether preferably has an alkyl group (preferably a branched alkyl group) having 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, still more preferably 8 to 14 carbon atoms. <14> The composition according to <13>, wherein the alkyl glyceryl ether is preferably 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, or a mixture of two or more thereof; more preferably, one or more selected from the group consisting of 2-ethylhexyl glyceryl ether, decyl glyceryl ether, isodecyl glyceryl ether, and lauryl glyceryl ether; still more preferably, one or more selected from the group consisting of 2-ethylhexyl glyceryl ether and isodecyl glyceryl ether. <15> The composition according to <7>, wherein the anionic surfactant is preferably at least one selected from the group consisting of alkylbenzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, alkyl sulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfo fatty acid salts, N-acyl amino acids, phosphoric acid mono- or diesters, and sulfosuccinic acid esters; more preferably, at least one selected from the group consisting of alkyl sulfates, alkyl ether sulfates, and alkyl ether carboxylates; still more preferably, an alkyl sulfate. <16> <16> The cationic surfactant is one or more selected from the group consisting of alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylamidopropyltrimethylammonium salts, benzalkonium chloride, alkylpyridinium salts, alkyldimethylamines and their salts, alkoxyalkyldimethylamines and their salts, alkylamidopropyldimethylamines and their salts, diethanolamine monoalkyl esters and their salts, triethanolamine monoalkyl esters and their salts, and triethanolamine dialkyl esters and their salts, preferably benzalkonium chloride, and the composition according to <7>. <17> The content of the nonionic surfactant in the wing wetting agent is preferably 50% by mass or more, more preferably 70% by mass or more, still more preferably 80% by mass or more, even more preferably 90% by mass or more, even more preferably 95% by mass or more, and 100% by mass or less, and the composition according to any one of <7> to <16>. <18> The water content in the composition is preferably 90% by mass or more, more preferably 97% by mass or more, even more preferably 99% by mass or more, and preferably 99.9% by mass or less, and the composition according to any one of <1> to <17>. <19> The content of components other than the wing wetting agent and water in the composition is preferably 20% by mass or less, more preferably 15% by mass or less, still more preferably 10% by mass or less, even more preferably 5% by mass or less, even more preferably 1% by mass or less, and even more preferably 0.1% by mass or less, and the composition according to any one of <1> to <18>. <20> The content ratio of the wing wetting agent to the water content in the composition (wing wetting agent / water) is preferably 0.02 or less, more preferably 0.01 or less, as a mass ratio, and the composition according to any one of <1> to <19>. <21> The composition according to any one of <1> to <20>, wherein the ethanol content in the composition is preferably 0.2% by mass or less, more preferably 0.1% by mass or less. <22> The composition according to any one of <1> to <21>, wherein the content of the insecticidal component in the composition is less than 1% by mass, preferably 0.1% by mass or less, more preferably 0.01% by mass or less, still more preferably 0.001% by mass or less, and most preferably substantially not contained. <23> The composition according to any one of <1> to <22>, wherein the content of the bactericide in the composition is less than 0.1% by mass, preferably 0.05% by mass or less, more preferably 0.01% by mass or less, still more preferably 0.005% by mass or less, and most preferably substantially not contained. <24> The composition according to any one of <1> to <23>, wherein the surface tension of the composition at 25 °C is 27.0 mN / m or more, preferably 27.5 mN / m or more, more preferably 28.0 mN / m or more, still more preferably 29.0 mN / m or more, even more preferably 29.5 mN / m or more, and 50.0 mN / m or less, preferably 45.0 mN / m or less, more preferably 40.0 mN / m or less, still more preferably 33.0 mN / m or less, even more preferably 31.0 mN / m or less. <25> The composition according to any one of <1> to <24>, wherein the content of the (meth)acrylic acid alkyl ester copolymer in the composition is preferably less than 0.1% by mass, more preferably 0.05% by mass or less. <26> The kinematic viscosity of the composition at 25 °C is preferably 0.8 mm 2 / s or more, more preferably 0.9 mm 2 / s or more, and preferably 2.5 mm 2 / s or less, more preferably 2.0 mm 2 / s or less, still more preferably 1.5 mm 2 / s or less. The composition according to any one of <1> to <25>. <27> A spray for controlling flying pests, filled with a composition for controlling flying pests in a spray container, wherein the composition contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution at 25°C, further contains 80% by mass or more and 99.99% by mass or less of water, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. <28> A spray for controlling flying pests, filled with a composition for controlling flying pests in a spray container, wherein the composition has a surface tension of 27.0 mN / m or more and 50.0 mN / m or less at 25°C, contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent, further contains 80% by mass or more and 99.99% by mass or less of water, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less.

[0060] <29> A spray for suppressing the flight of flying pests, filled with a composition for suppressing the flight of flying pests in a spray container, wherein the composition contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution at 25°C, further contains 80% by mass or more and 99.99% by mass or less of water, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. <30> A spray for causing flying pests to fall, filled with a composition for causing flying pests to fall in a spray container, wherein the composition contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution at 25°C, further contains 80% by mass or more and 99.99% by mass or less of water, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. <31> A spray for controlling flying pests, filled with a composition for controlling flying pests in a spray container, The spray for controlling flying pests, wherein the composition contains a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution in an amount of 0.01% by mass or more and 3.0% by mass or less, further contains water in an amount of 80% by mass or more and 99.99% by mass or less, the content of the (meth)acrylic acid alkyl ester copolymer in the composition is 0.05% by mass or less, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. <32> A spray for controlling flying pests, which is filled with a composition for controlling flying pests in a spray container, The spray for controlling flying pests, wherein the composition has a surface tension of 27.0 mN / m or more and 50.0 mN / m or less at 25°C, contains a wing wetting agent in an amount of 0.01% by mass or more and 3.0% by mass or less, further contains water in an amount of 80% by mass or more and 99.99% by mass or less, the content of the (meth)acrylic acid alkyl ester copolymer in the composition is 0.05% by mass or less, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. <33> A spray for controlling flying pests, which is filled with a composition for controlling flying pests in a spray container, The spray for controlling flying pests, wherein the composition contains a (meth)acrylic acid alkyl ester copolymer and contains a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution in an amount of 0.01% by mass or more and 0.80% by mass or less, further contains water in an amount of 80% by mass or more and 99.99% by mass or less, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. <34> A spray for controlling flying pests, which is filled with a composition for controlling flying pests in a spray container, The spray for controlling flying pests, wherein the composition has a surface tension of 27.0 mN / m or more and 50.0 mN / m or less at 25°C, contains a (meth)acrylic acid alkyl ester copolymer, contains a wing wetting agent in an amount of 0.01% by mass or more and 0.80% by mass or less, further contains water in an amount of 80% by mass or more and 99.99% by mass or less, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. <35> A spray for controlling flying pests, which is filled in a trigger spray-type container without a foam-forming mechanism, wherein the composition contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution at 25°C, further contains 80% by mass or more and 99.99% by mass or less of water, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. <36> A spray for controlling flying pests, which is filled in a trigger spray-type container without a foam-forming mechanism, wherein the composition has a surface tension of 27.0 mN / m or more and 50.0 mN / m or less at 25°C, contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent, further contains 80% by mass or more and 99.99% by mass or less of water, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less. <37> The spray according to any one of <27> to <36>, wherein the surface tension of the 3 mmol / kg aqueous solution of the wing wetting agent is 27.0 mN / m or more and 50.0 mN / m or less at 25°C, preferably 27.5 mN / m or more, more preferably 28.0 mN / m or more, still more preferably 29.0 mN / m or more, even more preferably 29.5 mN / m or more, preferably 45.0 mN / m or less, more preferably 40.0 mN / m or less, still more preferably 33.0 mN / m or less, and even more preferably 31.0 mN / m or less. <38> The spray according to any one of <27> to <32>, <35> to <37>, wherein the content of the wing wetting agent in the composition is preferably 0.02% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.08% by mass or more, even more preferably 0.10% by mass or more, preferably 2.0% by mass or less, more preferably 1.0% by mass or less, still more preferably 0.80% by mass or less, even more preferably 0.55% by mass or less, and even more preferably 0.40% by mass or less. <39> The average particle diameter of the droplets is preferably 30 μm or more, more preferably 50 μm or more, preferably 300 μm or less, more preferably 200 μm or less, and even more preferably 170 μm or less. The spray according to any one of <27> to <38>. <40> The nozzle diameter of the spray container is preferably 0.1 mm or more, more preferably 0.3 mm or more, preferably 1.5 mm or less, and more preferably 1.0 mm or less. The spray according to any one of <27> to <39>. <41> The spray container is a trigger spray type container, preferably a pressure accumulating type trigger spray container. The spray according to any one of <27> to <34>, <37> to <40>. <42> The trigger spray type container is a trigger spray type container having no foaming mechanism. The spray according to <41>. <43> The discharge amount of the composition by the trigger spray type container is preferably 0.2 g / time or more, more preferably 0.5 g / time or more, and even more preferably 0.7 g / time or more as the discharge amount per trigger operation, preferably 2.0 g / time or less, more preferably 1.5 g / time or less, and even more preferably 1.2 g / time or less. The spray according to <35>, <36>, <41> or <42>. <44> The surface tension of the composition at 25°C is 27.0 mN / m or more, preferably 27.5 mN / m or more, more preferably 28.0 mN / m or more, even more preferably 29.0 mN / m or more, and even more preferably 29.5 mN / m or more, and 50.0 mN / m or less, preferably 45.0 mN / m or less, more preferably 40.0 mN / m or less, even more preferably 33.0 mN / m or less, and even more preferably 31.0 mN / m or less. The spray according to any one of <27> to <43>. <45> A method for controlling flying pests, which comprises spraying, as droplets with an average particle size of 20 μm or more and 400 μm or less, a composition containing 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension at 25 °C of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution, and further containing 80% by mass or more and 99.99% by mass or less of water, and bringing the droplets into contact with the wings of the flying pests. <46> A method for controlling flying pests, which comprises spraying, as droplets with an average particle size of 20 μm or more and 400 μm or less, a composition having a surface tension at 25 °C of 27.0 mN / m or more and 50.0 mN / m or less, containing 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent, and further containing 80% by mass or more and 99.99% by mass or less of water, and bringing the droplets into contact with the wings of the flying pests. <47> The method according to <45> or <46>, wherein the surface tension at 25 °C of a 3 mmol / kg aqueous solution of the wing wetting agent is 27.0 mN / m or more and 50.0 mN / m or less, preferably 27.5 mN / m or more, more preferably 28.0 mN / m or more, still more preferably 29.0 mN / m or more, even more preferably 29.5 mN / m or more, and preferably 45.0 mN / m or less, more preferably 40.0 mN / m or less, still more preferably 33.0 mN / m or less, even more preferably 31.0 mN / m or less. <48> The method according to any one of <45> to <47>, wherein the content of the wing wetting agent in the composition is preferably 0.02% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.08% by mass or more, even more preferably 0.10% by mass or more, and preferably 2.0% by mass or less, more preferably 1.0% by mass or less, still more preferably 0.80% by mass or less, even more preferably 0.55% by mass or less, even more preferably 0.40% by mass or less. <49> The method according to any one of <45> to <48>, wherein the average particle size of the spray droplets is 20 μm or more, preferably 30 μm or more, more preferably 50 μm or more, and preferably 300 μm or less, more preferably 200 μm or less, still more preferably 170 μm or less. <50> The method according to any one of <45> to <49>, wherein the flying pest is a mosquito.

Example

[0061] Hereinafter, the present invention will be described by way of examples, but the present invention is not limited to the scope of the examples. In this example, various measurements and evaluations were carried out by the following methods.

[0062] (Surface tension) The surface tension was measured by the Wilhelmy method under an environment of 25°C. For each wetting agent described in Table 1, an aqueous solution with a concentration of 3 mmol / kg prepared by dissolving each wetting agent in water was used as a measurement sample. For the composition for controlling flying pests described in each example, the composition itself was used as a measurement sample. These measurement samples were poured into a glass petri dish with a diameter of 6.4 cm and a depth of 3.8 cm, and after removing the bubbles on the water surface, the measurement was carried out in a state of standing still for 30 minutes or more. In this measurement, a surface tensiometer "K100" (manufactured by KRUSS) was used, and a platinum plate was maintained in a state of being immersed 1 mm in the aqueous solution, and the measured value 10 minutes after the immersion was taken as the value of the surface tension.

[0063] (Contact angle with mosquito wings) The wings of female Culex pipiens pallens were collected, and 8 to 10 collected wings were arranged side by side without gaps on a double-sided tape (NITTO TAPE, manufactured by Nitto Denko Corporation). Using a contact angle meter "DMo-501" (manufactured by Kyowa Interface Science Co., Ltd.), in an environment of 25°C, 0.5 μL of an aqueous solution of the wing wetting agent at a concentration of 3 mmol / kg was dropped onto the wings, and the contact angle 1 second after the dropping was measured by the θ / 2 method.

[0064] (Kinematic viscosity) The kinematic viscosity was measured using an Ubbelohde viscometer (kinematic viscosity measurement range: 0.6 to 3.0 mm 2 / s). The sample was put into the viscometer so that no bubbles were generated, and the viscometer was installed in a constant temperature bath so as to be vertical. Also, for the sample inside the viscometer during measurement, the distance from the liquid level in the thermostat and the inner wall of the thermostat to any part of the sample was made 20 mm. The sample was left stationary until it reached a temperature of 25°C. After reaching 25°C, the sample was allowed to fall naturally, and the outflow time for the meniscus of the sample to pass between the predetermined markings was measured. The kinematic viscosity was calculated by multiplying the measured time by the constant specific to the viscometer.

[0065] (Volume particle size distribution and volume median diameter (D50) of spray droplets) The volume particle size distribution and volume median diameter (D50) of the spray droplets were measured by the laser diffraction method at room temperature (25°C) using a spraytec laser diffraction system (Malvern Panalytical, model number: STP5921). Each example of the composition was filled into a spray container and a spray was set up such that the tip of the spray nozzle of the spray container was at a position 15 cm horizontally from the measurement area of the laser diffraction system. The composition was sprayed by performing a single trigger operation, and the volume particle size distribution of the spray droplets detected in the measurement area with a laser length of 34 cm and a laser width of 1.8 cm was measured. The value of the volume median diameter (D50) was taken as the average diameter of the spray droplets. The measurement range of the volume particle size distribution was set to 0.1 - 2000 μm. In the said trigger operation, the trigger was pulled with a full stroke. The trigger operation time (the time from the start of pulling the trigger to the end of pulling) was 0.2 - 0.5 seconds, the liquid discharge time (the time from the start of liquid discharge to the end of discharge) was 0.2 - 0.3 seconds, and the discharge speed (discharge amount / liquid discharge time) was 3.0 - 4.5 g / s.

[0066] (Number of mosquitoes falling at a spray distance of 30 cm) The evaluation method for the number of mosquitoes falling at a spray distance of 30 cm will be described with reference to FIGS. 1 and 2. FIG. 1 is a plan schematic view of a frame (1) enclosing mosquitoes used for evaluating the number of mosquitoes falling, and FIG. 2 is a schematic view of the state of spraying the composition for flying pest control into the frame (1) as seen from the side direction of the frame (1). As shown in Fig. 1, 10 mosquitoes (2) (adult Aedes albopictus) were placed in a plastic frame (1) with an aspect ratio of 6 cm × 6 cm and a depth of 4 cm. The front surface (11) and the rear surface (12) of the frame (1) were covered with a mesh net (3) having a wire diameter of 0.1 mm and a mesh opening of 1 mm, and the mosquitoes were enclosed. Next, as shown in Fig. 2, a spray filled with the composition of each example was fixed so that the tip (i.e., the spray outlet) (41) of the injection nozzle of the spray container (4) came to a position where the horizontal distance d to the front surface (11) of the frame (1) containing the mosquitoes (2) was 30 cm. The composition was sprayed by performing a trigger operation once toward the inside of the frame (1). (5) in Fig. 2 is the sprayed composition. After 30 seconds, the state of the mosquitoes (2) was observed, and the number of mosquitoes that could not fly was counted. This operation was repeated 3 times, and the average value of the number of mosquitoes that could not fly was taken as the number of mosquitoes that dropped.

[0067] (Amount of spray droplets reaching) A spray filled with a 3 mmol / kg aqueous solution of the wetting agent described in Table 1 was prepared in spray container A of Table 2. In the evaluation method described in the previous paragraph, a paper towel (Kimtowel White, manufactured by Nippon Paper Crecia Co., Ltd.) cut to a size of 6 cm × 6 cm was pasted on the front surface (11) of the frame (1) with double-sided tape instead of the mesh net (3). After measuring the total weight of the frame (1) and the paper towel before the evaluation, the spray was fixed so that the tip (i.e., the spray outlet) (41) of the injection nozzle of the spray container (4) came to a position where the horizontal distance d to the front surface (11) of the frame (1) was 30 cm, and the aqueous solution was sprayed by performing a trigger operation 5 times toward the inside of the frame (1). After spraying, the weight of the frame (1) and the paper towel was measured, and the amount of spray droplets reaching per spray was calculated from the following calculation formula. Amount of spray droplets reaching (mg / cm 2 ·time) = {(weight of the frame and the paper towel after spraying) - (weight of the frame and the paper towel before spraying)} ÷ area of the paper towel (36 cm 2 ) ÷ number of sprays (5 times) It can be determined that the higher the amount of spray droplets reaching, the higher the straight - advancing property of the spray droplets when used in the composition for controlling flying pests, and it is an excellent wetting agent with the effect of efficiently reaching flying pests.

[0068] (Stickiness evaluation) A 6.5 cm square tile was set vertically on the ground, and a spray filled with the composition of each example was installed so that the tip (spray outlet) of the spray nozzle of the spray container was at a horizontal distance of 30 cm from the tile surface. After performing a trigger operation once to spray the composition, it was left to dry naturally. Four experienced researchers evaluated the stickiness felt when touching the sprayed surface of the tile by hand according to the following criteria, and the average score was calculated. <Evaluation criteria> 4: No stickiness at all 3: Slightly sticky 2: Considerably sticky 1: Extremely sticky, feeling adhesiveness

[0069] Examples 1 - 21, Comparative Examples 1 - 9 (Preparation and evaluation of the composition for controlling flying pests) The wetting agents and film - forming polymers shown in Table 1 and the spray containers shown in Table 2 were prepared. Each component used in the composition for controlling flying pests was blended and mixed in the blending amounts shown in Tables 3 - 6 to prepare a composition for controlling flying pests. The composition was filled to 300 - 370 mL according to the capacity of the spray container shown in the table to produce a spray for controlling flying pests. The blending amounts described in Tables 3 - 6 are the active ingredient amounts (mass%) of each component. Also, for the spray container E used in Comparative Example 9, a container with an average particle size of the sprayed droplets smaller than 20 μm was used. Using the obtained spray for controlling flying pests, various evaluations were carried out by the above - mentioned method. The evaluation results are shown in Tables 3 - 6. In each table, the surface tension of the 3 mmol / kg aqueous solution of the wetting agent at 25°C was simply denoted as "25°C surface tension".

[0070]

Table 1

[0071]

Table 2

[0072]

Table 3

[0073]

Table 4

[0074]

Table 5

[0075]

Table 6

[0076] From Tables 3 to 6, it can be seen that according to the composition for controlling flying pests of the present invention, it is excellent in the effect of reducing the flying ability of mosquitoes, which are flying pests. Furthermore, in Examples 1 to 9, 11 to 13, 15 to 17, 19, and 20, where the content of the wing wetting agent in the composition used is 0.55% by mass or less and the average particle size of the spray droplets is 200 μm or less, the composition for controlling flying pests has little stickiness after being sprayed onto the tiles. Therefore, the stickiness caused by the adhesion of the sprayed composition to the sprayed surface can also be suppressed, and the handleability is good.

[0077] As the composition for controlling flying pests of the present invention, the following formulations can be prepared by a conventional method.

[0078] [Formulation Example 1 Composition for Controlling Flying Pests] Polyoxyethylene lauryl ether (number of moles of EO added 9) (*1) 0.40% by mass Fatty acid amide propyl betaine (*2) 0.05% by mass 2-Propanol 5.0% by mass 1,3 - Butylene glycol 5.0 mass% Propylene glycol 5.0 mass% Fragrance 0.2 mass% Purified water 84.35% by mass Total 100 mass% (*1) Emulgen 109P (Kao Corporation) (*2) Lauramidopropyl betaine, Amphitol 20AB (Kao Corporation)

Industrial Applicability

[0079] According to the present invention, it is possible to provide a composition for controlling flying pests and a spray for controlling flying pests, which are highly safe to the human body and the environment, and can reduce the flying ability of flying pests by spraying on them and efficiently control them.

Explanation of Signs

[0080] 1 Frame Front surface of Frame 11 Rear surface of Frame 12 2 Mosquito 3 Mesh net 4 Spray container Tip (spray outlet) of the injection nozzle of the spray container 41 5 Composition for controlling flying pests that has been sprayed

Claims

1. A composition for controlling flying pests, which contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution at 25°C, and is used by spraying the composition as droplets having an average particle size of 20 μm or more and 400 μm or less.

2. 2. The flying pest control composition of claim 1, wherein the wing wetting agent comprises a non-ionic surfactant.

3. 3. The flying insect pest control composition according to claim 2, wherein the nonionic surfactant is at least one selected from the group consisting of polyoxyalkylene alkyl ethers, alkyl glucosides and alkyl glyceryl ethers.

4. The flying pest control composition according to any one of claims 1 to 3, wherein the composition contains 80% by mass or more and 99.99% by mass or less of water.

5. A composition for controlling flying pests, which contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent, is used by spraying droplets having an average particle size of 20 μm or more and 400 μm or less, and has a surface tension of 27.0 mN / m or more and 50.0 mN / m or less at 25°C.

6. A flying pest control spray in which a flying pest control composition is filled in a spray container, The composition contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent having a surface tension of 27.0 mN / m or more and 50.0 mN / m or less in a 3 mmol / kg aqueous solution at 25°C, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less.

7. A flying pest control spray in which a flying pest control composition is filled in a spray container, The composition has a surface tension of 27.0 mN / m or more and 50.0 mN / m or less at 25°C, contains 0.01% by mass or more and 3.0% by mass or less of a wing wetting agent, and is sprayed as droplets having an average particle size of 20 μm or more and 400 μm or less.

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