Aerosol for pest control and method for controlling pests

Abstract

To provide an aerosol for controlling pests and mites, which can improve the efficiency of a manufacturing process of an aerosol for controlling pests and mites, and of preparatory work for carrying out a method for controlling pests and mites, and which exerts an excellent control effect against various pests by a simple airborne spray treatment, and a method for controlling pests and mites. [Solution] This aerosol for controlling pests and mites is equipped with an aerosol valve for metered spray, and comprises a pressure-resistant container sealed with an aerosol concentrate (L) containing one pest and mite control ingredient (a) selected from the group consisting of permethrin, cyfluthrin, fenothrin, and cyphenothrin, and a saturated hydrocarbon organic solvent (b) having a boiling point of 175 to 300°C, and a propellant (G), wherein the volume ratio (G / b) of the propellant (G) to the saturated hydrocarbon organic solvent (b) is set to 3.3 to 200. This aerosol for controlling pests and mites, and a method for controlling pests and mites using this aerosol for controlling pests and mites, are also provided.

Description

[Technical Field]

[0001] The present invention relates to an aerosol for pest and mite control equipped with a metered-dose spray aerosol valve, and a method for controlling pests and mites using the aerosol for pest and mite control. [Background technology]

[0002] For insecticides targeting crawling insects such as cockroaches that roam floors and walls, as well as indoor dust mites, the most common types applied to areas and pathways where these insects live are (1) fumigants, (2) full-volume spray aerosols, (3) topical aerosols, and (4) baits, each with its own unique characteristics in terms of formulation.

[0003] (1) Fumigants and (2) full-volume spray aerosols are methods that release the chemical into every corner of a room at once, and then seal the room for a set period of time to increase the concentration of the chemical. Since people cannot enter the room during this time, they fall under the category of pharmaceuticals. These formulations are characterized by their so-called spatial treatment, which provides a high extermination effect against crawling insects throughout the entire treated space due to the released chemical. However, using these formulations requires the preparation of electrical appliances and tableware before treatment, and cleaning up the sprayed sediment after treatment, and special attention must be paid to the safety of the chemicals, so they cannot be said to be formulations that can be easily and frequently used.

[0004] On the other hand, (3) surface-applied aerosols and (4) spot-applied baits are classified as quasi-drugs with milder effects on the human body and are easier to use than (1) fumigants and (2) full-volume spray aerosols. However, because they do not treat the entire space, the contact efficiency between the pesticide and crawling insects or indoor dust mites is inferior, and they do not necessarily provide an efficient method of extermination.

[0005] Developing a quasi-drug that is a spatial treatment agent targeting crawling insects such as cockroaches and bed bugs or indoor dust mites requires obtaining pharmaceutical registration after undergoing rigorous review, particularly regarding efficacy and safety, making the process quite challenging. Consequently, apart from products that do not require pharmaceutical registration, developing a quasi-drug control agent for crawling insects and indoor dust mites has been considered difficult.

[0006] The inventors of the present invention, in developing a space treatment agent that is a quasi-drug targeting crawling insects and indoor dust mites, diligently studied to develop a formulation that would provide sufficient control in practical use simply by spraying with a metered-dose aerosol, rather than formulations that are used once every 2 to 4 weeks, such as (1) fumigants or (2) full-volume spray aerosols, and that is safe enough to be used even in situations where people are present. As a result, they invented an extremely useful "method for controlling pests and mites" (see Patent Document 1) that is effective not only against crawling insects and indoor dust mites but also against flying insects on the day of spraying. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Patent No. 5517122 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] According to the pest and mite control method of Patent Document 1, when an aerosol is sprayed, the sprayed particles form both floating particles that remain suspended in the air for a long period of time and adhesive particles that adhere to walls and other surfaces and settle on floors. The floating particles exert a control effect against flying insects, while the adhesive particles exert a control effect against crawling insects and indoor dust mites by adhering to their habitats and pathways. With this method, a continuous control effect against crawling insects and indoor dust mites can be achieved by basically performing a quantitative spray treatment once every 1 to 2 days.

[0009] By the way, the pest and mite control method in Patent Document 1 is (a) a vapor pressure of 2 × 10 at 30°C -4 ~1 × 10 -2 (b) One or more pyrethroid compounds selected from those that are volatile at room temperature and have a vapor pressure of mmHg, and (b) a vapor pressure of 1 × 10 at 30°C. -4 It is essential to use one or more non-volatile compounds selected from those with a volatility of less than mmHg, and it is necessary to prepare two or more pest and mite control components. Therefore, depending on the combination of pest and mite control components, there was a problem that the manufacture of the aerosol for pest and mite control used in this method and the preparation work for carrying out this method were time-consuming.

[0010] This invention has been made in view of the above-mentioned problems, and aims to provide an aerosol for pest and mite control and a method for pest and mite control that can streamline the manufacturing process of aerosols for pest and mite control and the preparatory work for implementing a method for pest and mite control, and that exhibits excellent control effects against various pests with simple spatial spraying treatment. [Means for solving the problem]

[0011] The characteristic configuration of the aerosol for pest and mite control according to the present invention, which solves the above problems, is as follows: A pest and mite control aerosol equipped with a metered-dose spray aerosol valve, In a pressure vessel, an aerosol concentrate (L) containing one insect and mite control component (a) selected from the group consisting of permethrin, cyfluthrin, phenothrin, and cyphenothrin, and a saturated hydrocarbon organic solvent (b) having a boiling point of 175-300°C, Propellant (G), It is enclosed and The volume ratio (G / b) of the propellant (G) to the saturated hydrocarbon organic solvent (b) is set to 3.3 to 200.

[0012] According to the aerosol for controlling pests and mites of this configuration, the aerosol stock solution (L) enclosed in the aerosol may contain one pest and mite control component (a) selected from the group consisting of permethrin, cyfluthrin, phenothrin, and silafluofen, that is, one type of component as the pest and mite control component (a), and a saturated hydrocarbon-based organic solvent (b) having a boiling point of 175 to 300°C. Therefore, compared with the conventional aerosol for controlling pests and mites that requires blending two or more pest and mite control components, the manufacturing process can be simplified, and the production efficiency is improved, making it very useful industrially. In addition, since the volume ratio (G / b) of the propellant (G) to the saturated hydrocarbon-based organic solvent (b) is set to 3.3 to 200, by simply performing space spraying treatment using the aerosol for controlling pests and mites of this configuration, not only flying pests but also crawling pests and indoor dust mites can exhibit excellent control effects.

[0013] In the aerosol for controlling pests and mites according to the present invention, It is preferable that the volume ratio (L / G) of the aerosol stock solution (L) to the propellant (G) is set to 0.05 to 1.

[0014] According to the aerosol for controlling pests and mites of this configuration, since the volume ratio (L / G) of the aerosol stock solution (L) to the propellant (G) is set to 0.05 to 1, floating particles and adhering particles are appropriately formed after the aerosol is sprayed, and a wide range of control effects can be exerted from flying pests to crawling pests and indoor dust mites.

[0015] In the aerosol for controlling pests and mites according to the present invention, It is preferable that the saturated hydrocarbon-based organic solvent (b) contains normal paraffin and / or isoparaffin.

[0016] According to the aerosol for controlling pests and mites of this configuration, by using a substance containing normal paraffin and / or isoparaffin as the saturated hydrocarbon-based organic solvent (b), an excellent control effect can be exerted.

[0017] In the aerosol for controlling pests and mites according to the present invention, The normal paraffin is preferably normal tridecane.

[0018] According to the aerosol for controlling pests and mites having this configuration, by using normal tridecane as the normal paraffin, a more excellent control effect can be exhibited.

[0019] In the aerosol for controlling pests and mites according to the present invention, The isoparaffin is preferably isododecane.

[0020] According to the aerosol for controlling pests and mites having this configuration, by using isododecane as the isoparaffin, a more excellent control effect can be exhibited.

[0021] In the aerosol for controlling pests and mites according to the present invention, The spray particles sprayed from the metering aerosol valve are preferably set to have a volume median particle diameter (Dv50) of 15 to 80 μm at 25°C and a spray distance of 50 cm.

[0022] According to the aerosol for controlling pests and mites having this configuration, since the volume median particle diameter (Dv50) of the spray particles sprayed from the metering aerosol valve is set to 15 to 80 μm, when the aerosol is sprayed, the spray particles are formed in a state suitable for controlling crawling pests and indoor dust mites by space treatment, and an appropriate control effect can be obtained.

[0023] In the aerosol for controlling pests and mites according to the present invention, It is configured as a metering injection type aerosol for spraying a certain amount of space in an indoor space, and the volume of the indoor space is preferably 18.8 to 33.3 m 3

[0024] According to the aerosol for controlling pests and mites having this configuration, with a volume of 18.8 to 33.3 m 3 ​By configuring it as a metered-dose spray aerosol that sprays a fixed amount into indoor spaces, it not only provides control against flying insects, crawling insects, and indoor dust mites that have entered indoor spaces, but also provides control against crawling insects and indoor dust mites that hide in the gaps between furniture and between furniture and walls, as the insect and mite control components spread throughout the entire indoor space.

[0025] The characteristic features of the pest and mite control method according to the present invention are: A method of controlling pests and mites using any one of the above-mentioned aerosols for controlling pests and mites, The process involves applying a certain amount of spray to an indoor space to control pests and other pathogens.

[0026] The pest and mite control method with this configuration can exhibit the same excellent control effect as the pest and mite control aerosol described above. In other words, the pest and mite control aerosol used in the pest and mite control method with this configuration simplifies the manufacturing process compared to conventional pest and mite control aerosols that required the mixing of two or more pest and mite control components, thus streamlining the preparation work for implementing the pest and mite control method. Furthermore, since the volume ratio (G / b) of the propellant (G) to the saturated hydrocarbon organic solvent (b) in the pest and mite control aerosol used in the pest and mite control method with this configuration is set to 3.3 to 200, by simply spraying a certain amount into an indoor space according to the pest and mite control method with this configuration, the indoor space is treated for pest control, exhibiting excellent control effects not only against flying insects but also against crawling insects and indoor dust mites.

[0027] In the pest and mite control method according to the present invention, In the processing step described above, it is preferable to spray the aerosol for controlling pests and mites into the air by pressing the metered-volume spray aerosol valve multiple times.

[0028] According to this pest and mite control method, even if the size and shape of the indoor space to be treated differ, sufficient control effects against flying insects, crawling insects, and indoor dust mites can be achieved by pressing the metered-dose spray aerosol valve multiple times (an appropriate number of times) during the treatment process.

[0029] In the pest and mite control method according to the present invention, In the processing step described above, it is preferable to spray a total of 0.1 to 3.6 mL of the aerosol concentrate (L) and the propellant (G) into the space.

[0030] According to this pest and mite control method, by spraying a total of 0.1 to 3.6 mL of aerosol concentrate (L) and propellant (G) into the space during the treatment process, a more reliable control effect against flying insects, crawling insects, and indoor dust mites can be achieved. [Modes for carrying out the invention]

[0031] The following describes the aerosol for controlling pests and mites, and the method for controlling pests and mites according to the present invention. However, the present invention is not intended to be limited to the configurations and examples described below.

[0032] <Aerosol for pest and mite control> The aerosol for controlling pests and mites of the present invention is constructed by sealing an aerosol concentrate containing pest and mite control components and a saturated hydrocarbon organic solvent with a boiling point of 175 to 300°C together with a propellant in a pressure-resistant container, and attaching a metered-dose aerosol valve to it. The metered-dose aerosol valve has been appropriately set to spray capacity according to the purpose of the present invention, but since a known valve mechanism can be used, it is not shown in the illustration.

[0033] [Ingredients for controlling pests and mites] The pest and mite control component (referred to as (a)) is selected from the group consisting of permethrin, cyfluthrin, phenothrin, and cyphenothrin. Of these, permethrin or cyphenothrin is preferably used. When a certain amount of the pest and mite control aerosol of the present invention is sprayed into the air indoors, the sprayed particles ejected from the metered-discharge aerosol valve become floating particles that remain suspended in the air for a long period of time and adhesive particles that settle relatively quickly and adhere to walls and floors. However, even the floating particles eventually adhere to walls and floors, resulting in an excellent control effect in indoor spaces, particularly against crawling pests such as cockroaches and bed bugs, and indoor dust mites. Since the pest and mite control aerosol of the present invention achieves an excellent control effect with only one type of pest and mite control component (a), it is possible to streamline preparation work such as the manufacture of the pest and mite control aerosol used in the pest and mite control method described later. Therefore, compared to conventional aerosols for pest and mite control that required the formulation of two or more pest and mite control components, this product simplifies the manufacturing process and improves production efficiency, making it highly useful industrially.

[0034] [Saturated hydrocarbon organic solvents] The saturated hydrocarbon organic solvent (referred to as (b)) used has a boiling point of 175 to 300°C. By using the saturated hydrocarbon organic solvent (b) in combination with the pest and mite control component (a), excellent control effects against crawling insects and indoor dust mites are observed, and the stickiness of the floor surface is reduced. Examples of saturated hydrocarbon organic solvents (b) include aliphatic hydrocarbon solvents such as paraffinic hydrocarbons and naphthenic hydrocarbons, but normal paraffins and isoparaffins are preferred. In the case of normal paraffins, the number of carbon atoms is preferably 11 to 16, and more preferably 12 to 14. Examples of such normal paraffins include normal undecane, normal dodecane, normal tridecane, normal tetradecane, normal pentadecane, and normal hexadecane, with normal dodecane, normal tridecane, and normal tetradecane being preferred, and normal tridecane being more preferred. Furthermore, it is also possible to use neothiozol (manufactured by Chuo Kasei Co., Ltd.) containing these components. In the case of isoparaffins, the number of carbon atoms is preferably 12 to 18, and more preferably 12 to 13. Examples of such isoparaffins include isododecane, isotridecane, isotetradecane, isopentadecane, isohexadecane, isoheptadecane, and isooctadecane, with isododecane and isotridecane being preferred, and isododecane being more preferred. It is also possible to use Isopar M (manufactured by ExxonMobil) and IP Clean LX (manufactured by Idemitsu Kosan Co., Ltd.) containing these components. Note that two or more of the above-mentioned normal paraffins and isoparaffins can also be used in combination.

[0035] [Other ingredients] In addition to the above-mentioned insect and mite control component (a) and saturated hydrocarbon organic solvent (b) with a boiling point of 175-300°C, the aerosol concentrate (let's call this (L)) may also contain, as appropriate, fungicides, antibacterial agents, disinfectants, fragrances, deodorizers, stabilizers, antistatic agents, defoamers, synergists, solubilizers, and excipients targeting molds, fungi, etc. Examples of fungicides, antibacterial agents, and disinfectants include hinokitiol, 2-mercaptobenzothiazole, 2-(4-thiazolyl)benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one, triforine, 3-methyl-4-isopropylphenol, and orthophenylphenol. As fragrances, we use peppermint oil, orange oil, lemon oil, lavender oil, peppermint oil, eucalyptus oil, citronella oil, lime oil, yuzu oil, jasmine oil, cypress oil, green tea essential oil, neroli oil, geranium oil, petitgrain oil, lemongrass oil, cinnamon oil, lemon eucalyptus oil, thyme oil, perilla oil, pine oil, rose oil, rosemary oil, camphor oil, aromatic oils, clary sage oil, sandalwood oil, and spearmint. Oils, star anise oil, lavandin oil, oakmoss oil, octopus oil, patchouli oil, tonka bean tincture, turpentine oil, alligator bean tincture, basil oil, nutmeg oil, clove oil, bois de rose oil, cananga oil, cardamom oil, cassia oil, cedarwood oil, mandarin oil, tangerine oil, anise oil, bay oil, coriander oil, elemi oil, fennel oil, galbanum oil, cypress oil, vetiver oil, bergamot oil, Ylang-ylang oil, grapefruit oil, aldehydes with 6-12 carbon atoms (e.g., hexyl aldehyde, octanal, nonanal, undecyl aldehyde, undecanal, decyl aldehyde, etc.), anisaldehyde, cumin aldehyde, acetaldehyde phenylethylpropyl acetal, acetophenone, acetylcedrene, adoxal, allyl amyl glycolate, allylcyclohexanepropionate, damascone, α-damascone, β-damascone, ambrettelid, ambroxan, amyl cinnamic aldehyde, amyl cinnamic aldehyde dimethyl acetal, amyl valerianate, amyl salicylate, isoamyl acetate, butyl acetate, ethyl butyrate, acetyl eugenol, isoamyl salicylate, indole, allyl caproate,Ethyl caproate, ethyl propionate, ethyl acetoacetate, tesalon, α-ionone, β-ionone, α-methylionone, α-isomethylionone, β-methylionone, β-isomethylionone, γ-methylionone, γ-isomethylionone, indene, aurantiol, oakmoss No. 1, olibon, oxyphenylone, caryophyllene, cashmeran, carvon, caron, coumarin, p-crezyl methyl ether, geraniol, geranyl acetate, geranyl formate, geranyl nitrile, tetrahydrogenate Ranil, tetrahydrogeranyl acetate, Coavon, Sandaloa, Sandera, Santarex, Santalinol, methyl salicylate, cinnamic alcohol, cinnamic aldehyde, cisjasmon, citral, citral dimethylacetal, citrasal, citronellal, citronellol, citronellyl acetate, citronellyl formate, citronellyl nitrile, cyclamenaldehyde, cinnamyl acetate, dihydrojasmon, dimitol, isocyclocitral, jasmar, jasmolactone, jas Mophiran, Styraryl acetate, Styraryl propionate, Cedro amber, Cedrill acetate, Cedrol, Celestrid, Terpineol, α-Terpineol, γ-Terpineol, Turpinyl acetate, Thymol, Delta damascone, Delta C6-C13 lactone, Tonalid, Traceolide, Tripral, Isononyl acetate, Nerol, Neriel acetate, Neobergamate, Nopil acetate, Nopil alcohol, Bacdanol, Levosandol, Hyacinth dimethyl acetal, Hydrotropic acid Alcohol, hydroxycitronellol, hydroxycitronellal, α-pinene, β-pinene, butyl butyrate, p-tert-butylcyclohexanol, p-tert-butylcyclohexyl acetate, o-tert-butylcyclohexanol, o-tert-butylcyclohexyl acetate, p-tert-pentylcyclohexyl acetate, diphenyl oxide, fruitate, phenethyl alcohol, phenylethyl phenyl acetate, isobutylquinoline, phenylethyl alcohol, phenylethyl acetate,Phenylacetaldehyde Dimethyl Acetal, Benzyl Acetate, Benzyl Alcohol, Benzyl Salicylate, Benzaldehyde, Benzyl Formate, Dimethylbenzyl Carbinol, Helional, Heliotropin, Cis-3-Hexenol, Cis-3-Hexenyl Acetate, Cis-3-Hexenyl Salicylate, Hexyl Cinnamic Alcohol, Hexyl Salicylate, Pentalid, Beldox, Orthobornyl Acetate, Isobornyl Acetate, Isobornol, Borneol, Manzanate, Mayol, Muguet Aldehydes, miracaldehyde, myrcenol, dihydromyrcenol, dimilcetol, mugol, musk™-II, musk 781, musk C14, musk T, musk ketone, musk tibetine, musk mosken, menthanyl acetate, menthonate, methyl anthranilate, methyl eugenol, menthol, methylphenyl acetate, eugenol, isoeugenol, methylisoeugenol, γ-C6~C13 lactones (e.g., γ-nonalactone, γ-decalactone, γ-undecalactone, etc.), lime oxide, methyl lavender - Ketone, dihydrolinalool, ligstral, limonene, linalool, linalool oxide, tetrahydrolinalool, ethyllinalool, tetrahydrolinalyl acetate, linalyl acetate, ethyllinalyl acetate, lyral, rubafuran, rosephenone, rose oxide, benzoin, peruvian balsam, tolu balsam, tuberose oil, musk tincture, castorium tincture, civet tincture, ambergris tincture, dihydroterpinyl acetate, 1,8-cineole, 7-acetyl-1,2,3,4,5,6,7,8-octa Hydro-1,1,6,7-tetramethylnaphthalene, 4-acetoxy-3-amyltetrahydropyran, tricyclodecenylacetate, β-naphthylmethyl ester, benzophenone, benzyl benzoate, dimethylheptanol, mylacaldehyde, cumin alcohol, menthone, thiomenthon, cyclohexyl licylate, santalina alcohol, vanillin, ethyl vanillin, isolongifolanone, bagdanol, 3,7-dimethyl-7-methoxyoctan-2-ol, 2,4,6-trimethyl-2-phenyl-1,3-dioxane,4,6,6,7,8,8-Hexamethyl-1,3,4,6,7,8-Hexahydrocyclopentabenzopyran, Dimethylbenzyl acetate, Methyldihydrojasmonate, Undecalactone gamma, Cyclogalbanum, Terpenyl acetate, 1-Hexanol, Cis-3-Hexyl acetate, 1,4-Cineole, α-Terpinene, p-Cymene, Cis-Ocimene, Cis-β-Ocimene, Limetholone , trans-β-ocimene, terpinolene, 2-pentyloxyglycolate allyl, 2-n-pentylcyclopentanone, benzyl butyrate, ethyl acetate, ethyl caproate, isoamyl butyrate, allylhexanoate, allylheptanoate, allyloctanoate, allyl isobutyloxaacetate, allyl-n-amyloxyacetate, allylcyclohexyl acetate, allyl cyclo Examples of aromatic components include lohexylpropionate, allylcyclohexyloxyacetate, allylphenoxyacetate, anisylacetate, p-menthane-3,8-diol, methyldihydrojasmonic acid, 6-acetyl-1,1,2,4,4,7-hexamethyltetraline, cinnamyl formate, pulegone, galaxolide, camphor, neral, perillaldehyde, indole aroma, dihydroterpinyl acetate, γ-terpinene, ethyl phenylacetate, methylheptenone, prenyl acetate, p-cymene, β-naphthylmethyl ether, hexyl acetate, ethyl 2-methylpentanoate, 1-hexanol, maltol, allyl cyclohexanepropionate, α,3,3-trimethylcyclohexanemethanol formate, and fragrance components containing green leaf alcohol or green leaf aldehyde, which are referred to as "green scents." Examples of synergistic agents include piperonyl butoxide and octyl bicycloheptene dicarboxyimide. Examples of solubilizers include higher fatty acid esters with 16-20 carbon atoms such as isopropyl myristate, and lower alcohols with 2-3 carbon atoms such as ethanol and isopropanol.

[0036] [Characteristics of the aerosol concentrate] The content of the pest and mite control component (a) in the aerosol concentrate (L) is preferably 8-80 w / v%, more preferably 10-70 w / v%, and even more preferably 20-70 w / v%. If the content of the pest and mite control component (a) in the aerosol concentrate (L) is within the above range, when the aerosol is sprayed, the spray particles will be formed in a state suitable for controlling crawling insects and indoor dust mites by spatial treatment, and an appropriate control effect can be obtained. If the content of the pest and mite control component (a) in the aerosol concentrate (L) falls outside the above range, there is a risk that the spray particles will not be formed in an appropriate state when the aerosol is sprayed.

[0037] In the aerosol for controlling pests and mites of the present invention, the specific gravity of the aerosol concentrate (L) at 20°C is adjusted to 0.78 to 1.15, preferably to 0.80 to 1.10, and more preferably to 0.85 to 1.05. The specific gravity of the aerosol concentrate (L) can be adjusted by changing the mixing ratio of the pest and mite control component (a) and the saturated hydrocarbon organic solvent (b), or by adding other components. If the specific gravity of the aerosol concentrate (L) at 20°C is in the range of 0.78 to 1.15, when a certain amount of the aerosol for controlling pests and mites of the present invention is sprayed in an indoor treatment space, the spray particles containing the pest and mite control component (a) will eventually diffuse and adhere to the entire floor surface in a substantially uniform manner, resulting in excellent control effects against crawling pests such as cockroaches and bed bugs, and indoor dust mites in indoor spaces. In this specification, the term "control effect" refers to both the extermination effect based on knockdown and lethal effects, as well as the repellent effect. In many cases, even if the extermination effect is low, sufficient repellent effect can be practically used to achieve control. Furthermore, if the specific gravity of the aerosol concentrate (L) at 20°C is within the above range, the sprayed particles (adherent particles) will penetrate into gaps and shadows during the process of settling, so a flushing effect that causes cockroaches and other insects to fly out from gaps and shadows can be sufficiently expected. If the specific gravity of the aerosol concentrate (L) at 20°C is less than 0.78, there is a risk that the amount of sprayed particles (i.e., the insect and mite control component (a)) adhering to the floor surface will be insufficient. If the specific gravity of the aerosol concentrate (L) at 20°C exceeds 1.15, the adhesion of sprayed particles to the floor surface will become uneven, and there is a risk that the control effect will decrease.

[0038] [Propellant] Examples of propellants (referred to as (G)) include liquefied petroleum gas (LPG) such as propane, n-butane, and isobutane; liquefied gases such as n-pentane, isopentane, dimethyl ether (DME), and hydrofluoroolefins such as HFO1234ze; and compressed gases such as nitrogen gas, carbon dioxide, nitrous oxide, and compressed air. The above propellants (G) can be used alone or in mixtures, but those with LPG as the main component are easier to use. It is preferable to use the propellant (G) with the gauge pressure (20°C) adjusted to 0.1 to 0.7 MPa.

[0039] In the aerosol for pest and mite control of the present invention, the volume ratio (G / b) of the propellant (G) to the saturated hydrocarbon organic solvent (b) is set to 3.3 to 200, preferably to 3.5 to 200, more preferably to 4.0 to 100, and even more preferably to 4.5 to 50. By having the volume ratio (G / b) in the range of 3.3 to 200, simply spraying the aerosol for pest and mite control of the present invention into the air can provide excellent control effects not only against flying insects but also against crawling insects and indoor dust mites. If the volume ratio (G / b) falls outside the above range, the control effect against crawling insects and indoor dust mites may decrease, or the usability of the aerosol may deteriorate. Furthermore, the volume ratio (L / G) of the aerosol concentrate (L) to the propellant (G) is preferably set to 0.05 to 1, more preferably to 0.17 to 1, and even more preferably to 0.25 to 0.67. When the volume ratio (L / G) is in the range of 0.05 to 1, suspended and adhering particles are appropriately formed after the aerosol is sprayed, and a wide range of pest control effects can be achieved, from flying insects to crawling insects and indoor dust mites.

[0040] [Aerosol valve for metered spraying] In the pest and mite control aerosol of the present invention, the metered-dose spray aerosol valve is preferably set to a spray volume of 0.1 to 1.0 mL per spray, more preferably to 0.1 to 0.9 mL, and even more preferably to 0.2 to 0.4 mL. If the spray volume is in the range of 0.1 to 1.0 mL, even when using a saturated hydrocarbon organic solvent (b) with a boiling point of 175 to 300°C as the solvent and performing spatial spray treatment, stickiness on the floor surface can be reduced, and there is no risk of problems such as insufficient liquid or dripping during spraying. By performing valve operation (aerosol spraying) of the pest and mite control aerosol equipped with this metered-dose spray aerosol valve an appropriate number of times, suspended particles and adhesive particles are formed in the indoor space (treatment space), and an excellent control effect can be achieved. Furthermore, when the aerosol is sprayed by operating the control button of the metered-dose spray aerosol valve, it is preferable that the spray force measured at a distance of 5 cm from the nozzle of the metered-dose spray aerosol valve be set to 3 to 50 gf, more preferably to 5 to 40 gf, and even more preferably to 10 to 35 gf. If the spray force is in the range of 3 to 50 gf, the spray particles containing the pest and mite control component (a) will settle and adhere to the entire floor surface of the indoor treatment space, and a practically sufficient control effect against crawling insects and indoor dust mites can be obtained. The spray force can be appropriately adjusted depending on the composition of the aerosol concentrate (L), the components of the propellant, the ratio of the propellant, the internal pressure of the aerosol container, the shape of the nozzle, etc. The spray force can be measured, for example, using a digital force gauge (FGC-0.5, manufactured by Nidec-Shimpo Corporation).

[0041] The shape of actuators such as the operating button, nozzle, and spray nozzle in a metered-dose aerosol valve, as well as the shape of the pressure vessel, are not particularly limited, but can be appropriately selected according to the application and purpose of use. For example, it can be designed as a tabletop type with an operating button that sprays when pressed from above and a nozzle that points diagonally upwards, or as a portable type for small containers.

[0042] The number, shape, and size of the nozzles in a metered-dose aerosol valve are not particularly limited. For example, the number of nozzles may be one or two or more, but from the viewpoint of simple and low-cost manufacturing, it is preferable to have one nozzle. Furthermore, the shape (cross-sectional shape) of the nozzle may be circular, elliptical, polygonal, or various irregular shapes. The opening area of ​​the nozzle is 0.03 to 16.0 mm². 2 Preferably, 0.05 to 8.0 mm 2 It is more preferable that the nozzles are 0.3 mm or larger, and more preferably 0.4 mm or larger, when there is one nozzle and the nozzle is circular in shape.

[0043] For aerosol valves used for metered-dose spraying, a nozzle that is horizontal or angled upward is preferred. The nozzle length is preferably 2.0 to 80 mm, more preferably 3.0 to 70 mm, and even more preferably 5.0 to 30 mm.

[0044] The operating button for a metered-dose aerosol valve can be a push-down type or a trigger type button.

[0045] [Pressure vessel] The pressure vessel is not particularly limited in material as long as it has the required pressure resistance performance, but it can be made of metal such as aluminum or tinplate, synthetic resin such as polyethylene terephthalate, or pressure-resistant glass. If the pressure vessel is made of synthetic resin or pressure-resistant glass, it can be made semi-transparent or transparent so that the contents can be seen. The shape of the pressure vessel may be cylindrical or irregular. The capacity of the pressure vessel is preferably 10 to 200 mL, and more preferably 20 to 100 mL.

[0046] [Volume-average particle size of sprayed particles (Dv50)] In the aerosol for controlling pests and mites of the present invention, the volume average particle size (Dv50) of the spray particles sprayed from the metered-dose aerosol valve is preferably set to 15 to 80 μm, more preferably to 15 to 50 μm, and even more preferably to 20 to 40 μm. When the volume average particle size (Dv50) of the spray particles is within the above range, when the aerosol is sprayed, the spray particles are formed in a state suitable for controlling crawling insects and indoor dust mites by spatial treatment, and an appropriate control effect can be obtained. The volume average particle size (Dv50) of the spray particles can be appropriately adjusted by the composition of the aerosol concentrate (L), the components of the propellant, the ratio of the propellant, the internal pressure of the aerosol container, the shape of the nozzle, the nozzle length, etc.

[0047] In this invention, the volume-average particle diameter (Dv50) of the sprayed particles refers to the volume-average particle diameter (Dv50) measured by a particle size distribution analyzer and analyzed by an automatic calculation processing unit. Specifically, the volume-average particle diameter (Dv50) is determined at 25°C using a laser particle size distribution analyzer (SPRAYTEC model STP5321, manufactured by Malvern). The distance between the laser beam, which is irradiated from the laser light emitter to the light receiving unit, and the nozzle of the aerosol for pest and mite control is 50 cm, and the position of the aerosol is adjusted so that the sprayed particles pass perpendicularly through the laser beam. The measurement is then performed while the aerosol is being sprayed, and the particle size distribution of the sprayed particles is analyzed by an automatic calculation processing unit to determine the 50% volume-average particle diameter (Dv50) of the sprayed particles based on the volume integral distribution.

[0048] <Pest and mite control methods> The method for controlling pests and mites according to the present invention is carried out using the above aerosol for controlling pests and mites. In an indoor space, a treatment step of controlling the indoor space is implemented by spraying a certain amount of the aerosol for controlling pests and mites into the space. In this treatment step, even if the quantitative spraying aerosol valve is pressed once, a control effect can be obtained. However, by pressing the quantitative spraying aerosol valve multiple times (an appropriate number of times), if the aerosol for controlling pests and mites is sprayed into the entire indoor space, even when the size and shape of the indoor space to be treated are different, a sufficient control effect can be exerted on flying pests, crawling pests, and indoor dust mites. Further, if a total of 0.1 to 3.6 mL of the aerosol stock solution (L) and the propellant (G) is sprayed into the space, a more reliable control effect can be exerted on flying pests, crawling pests, and indoor dust mites.

[0049] In the above treatment step, it is preferably set so that the emission amount of the pest and mite control component into the air in the indoor space is 0.1 to 50 mg / m 3 and more preferably set so that it is 0.5 to 50 mg / m 3 Furthermore, in the air of the indoor space, the emission amount of the pest and mite control component is 0.1 to 50 mg / m 3When the aerosol concentrate is sprayed in such a manner, it is preferable that 10% or more by weight of the pest and mite control components diffuse and adhere to the entire floor surface of the indoor space within one hour of spraying, more preferably 30% or more diffuse and adhere to the entire floor surface of the indoor space, and even more preferably 50% or more diffuse and adhere to the entire floor surface of the indoor space. Here, the pest and mite control components are contained in the floating particles and adhesive particles formed after the aerosol concentrate is sprayed. Of these, the adhesive particles settle relatively quickly (within one hour) and reach the walls and floor, and the floating particles also eventually adhere to the walls and floor. It should be noted that "diffusing and adhering to the entire floor surface of the indoor space" means that the floor surface is in a state where it can exert a pest control effect due to the attached pest and mite control components, and it is not necessarily required that the insecticide components physically adhere to the entire floor surface. Within one hour of spraying, more than 10% by weight of the pest and mite control components diffuses and adheres to the entire floor surface of the indoor space, resulting in the present invention's aerosol for pest and mite control having excellent control effects against crawling insects that roam the floor surface. Furthermore, while the volume of the indoor space to be treated is not particularly limited, a volume equivalent to a 4.5 to 8 tatami mat room of 18.8 to 33.3 m³ is effective. 3 (Area 7.5~13.3m 2 Preferably, the height is 2.2 to 3.0 m. In this case, not only is it possible to obtain control effects against flying insects, crawling insects, and indoor dust mites that have entered the indoor space, but because the insect and mite control components spread throughout the entire indoor space, control effects are also obtained against crawling insects and indoor dust mites that hide in the gaps between furniture and between furniture and walls. However, even in indoor spaces with a larger volume or a smaller volume, the amount of insect and mite control components released into the air of the indoor space should be adjusted according to the volume of the indoor space, from 0.1 to 50 mg / m³. 3By appropriately setting the number of sprays, spray volume, etc., a similar pest control effect can be obtained regardless of the volume of the indoor space. When implementing the pest and mite control method of the present invention, the frequency of use of the pest and mite control aerosol should be appropriate according to the frequency and condition of pest and mite occurrences, and should be applied so that the amount of pest and mite control component released is within the above range.

[0050] <Pests targeted for control> The pests targeted by the aerosol and pest control method of the present invention are not particularly limited, but include pests that fly around indoors and cause harm or discomfort to people, such as mosquitoes like Culex pipiens and Aedes albopictus, midges, houseflies, drain flies, black flies, horseflies, wasps, leafhoppers, cockroaches such as German cockroaches, American cockroaches, and Oriental cockroaches, bed bugs, ants, house dust mites, confused flour beetles, rice weevils, cigarette beetles, pill bugs, and woodlice, and indoor dust mites such as Dermatophagoides farinae, Dermatophagoides pteronyssinus, Dermatophagoides farinae, and Cheyletiella mites. Of these pests and mites, the present invention can exhibit particularly superior control effects against cockroaches, bed bugs, and indoor dust mites. [Examples]

[0051] To confirm the efficacy of the aerosol for pest and mite control and the method for pest and mite control of the present invention, aerosol products (Examples 1-10) having the configuration of the present invention were prepared, and pest and mite control tests were conducted according to the method for pest and mite control of the present invention. For comparison, aerosol products (Comparative Examples 1-4) without the configuration of the present invention were also prepared, and similar tests were conducted.

[0052] [Example 1] Permethrin was used as the pest and mite control component (a), and n-tridecane (boiling point 235°C, manufactured by Merck) was used as the saturated hydrocarbon organic solvent (b). The permethrin was dissolved in n-tridecane to prepare an aerosol stock solution (L) with a permethrin content of 60 w / v%. Next, 10 mL of this aerosol stock solution (L) and 30 mL of liquefied petroleum gas (LPG) as the propellant (G) were pressurized and filled into an aerosol container (pressure-resistant container) equipped with a metered-dose spray aerosol valve with a spray capacity of 0.2 mL, so that the volume ratio of aerosol stock solution (L) to propellant (G) (L / G) was 0.33 (=25 / 75). An actuator with a nozzle was attached to obtain the pest and mite control aerosol of Example 1. The volume ratio of propellant (G) to saturated hydrocarbon organic solvent (b) (G / b) of the pest and mite control aerosol of Example 1 was 6.0.

[0053] [Example 2] An aerosol for controlling pests and mites was obtained in the same manner as in Example 1, except that the volume ratio (L / G) of the aerosol concentrate (L) to the propellant (G) was 0.25 (=20 / 80), and the volume ratio (G / b) of the propellant (G) to the saturated hydrocarbon organic solvent (b) was 8.0.

[0054] [Example 3] An aerosol for controlling pests and mites was obtained in the same manner as in Example 1, except that n-pentadecane (boiling point 271°C, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) was used as the saturated hydrocarbon organic solvent (b), the volume ratio of aerosol stock (L) to propellant (G) (L / G) was 0.25 (=20 / 80), and the volume ratio of propellant (G) to saturated hydrocarbon organic solvent (b) (G / b) was 8.0.

[0055] [Example 4] An aerosol for controlling pests and mites was obtained in the same manner as in Example 1, except that Isopar M (boiling point 240°C, manufactured by ExxonMobil) was used as the saturated hydrocarbon organic solvent (b).

[0056] [Example 5] An aerosol for controlling pests and mites was obtained in the same manner as in Example 1, except that cyphenothrin was used as the pest and mite control component (a), and the volume ratio (G / b) of the propellant (G) to the saturated hydrocarbon organic solvent (b) was 6.8.

[0057] [Example 6] An aerosol for controlling pests and mites of Example 6 was obtained in the same manner as in Example 1, except that cyphenothrin was used as the pest and mite control component (a), Isopar M (boiling point 240°C, manufactured by ExxonMobil) was used as the saturated hydrocarbon organic solvent (b), and the volume ratio (G / b) of propellant (G) to saturated hydrocarbon organic solvent (b) was 6.8.

[0058] [Example 7] An aerosol for controlling pests and mites of Example 7 was obtained in the same manner as in Example 1, except that Isopar M (boiling point 240°C, manufactured by ExxonMobil) was used as the saturated hydrocarbon organic solvent (b), and the spray capacity of the metered-dose aerosol valve was set to 1.0 mL.

[0059] [Example 8] An aerosol for controlling pests and mites was obtained in the same manner as in Example 1, except that isododecane (boiling point 180°C, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) was used as the saturated hydrocarbon organic solvent (b).

[0060] [Example 9] An aerosol for controlling pests and mites was obtained in the same manner as in Example 1, except that the spray capacity of the metered-dose aerosol valve was set to 0.4 mL.

[0061] [Example 10] An aerosol for controlling pests and mites was obtained in the same manner as in Example 1, except that the volume ratio (L / G) of the aerosol concentrate (L) to the propellant (G) was 0.05 (=5 / 95), and the volume ratio (G / b) of the propellant (G) to the saturated hydrocarbon organic solvent (b) was 38.0.

[0062] [Comparative Example 1] Cypermethrin and profluthrin were used as pest and mite control components (a), and an aerosol stock solution (L) was prepared by dissolving them in n-tridecane so that the cypermethrin content was 55 w / v% and the profluthrin content was 5 w / v%. The aerosol of Comparative Example 1 was obtained in the same manner as in Example 1, except that the volume ratio (G / b) of the propellant (G) to the saturated hydrocarbon organic solvent (b) was 5.8.

[0063] [Comparative Example 2] Comparative Example 2 aerosol was obtained in the same manner as in Example 1, except that n-decane (boiling point 172°C, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) was used as the saturated hydrocarbon organic solvent (b).

[0064] [Comparative Example 3] Aerosol Comparative Example 3 was obtained in the same manner as in Example 1, except that liquid paraffin (boiling point 310°C) was used as the saturated hydrocarbon organic solvent (b).

[0065] [Comparative Example 4] Aerosol Comparative Example 4 was obtained in the same manner as in Example 1, except that the aerosol stock solution (L) was prepared by dissolving permethrin in n-tridecane to a permethrin content of 7.5 w / v%, and the volume ratio (G / b) of the propellant (G) to the saturated hydrocarbon organic solvent (b) was 3.2.

[0066] The components of the aerosols for pest and mite control in Examples 1-10, and the aerosols in Comparative Examples 1-4 are summarized in Table 1 below.

[0067] [Table 1]

[0068] Next, in order to confirm the control effect of the pest and mite control aerosols of the present invention, control effect confirmation tests targeting crawling insects and mites, as well as stickiness confirmation tests on the floor surface after aerosol use, were conducted for the pest and mite control aerosols of Examples 1 to 10 and the aerosols of Comparative Examples 1 to 4.

[0069] <Test to confirm effectiveness in controlling cockroaches> A total of four 20 x 20 cm glass plates enclosed in a 25 m³ space. 3 The room (area is 10m²) 2 The experiment was conducted in a room equivalent to a 6-tatami mat room (the same applies hereafter). The experiment was conducted in the four corners of the room, and plastic rings approximately 20 cm in diameter, coated with petroleum jelly to prevent escape, were placed on top of each glass plate. The test insects (German cockroaches: 5 adult females) were released into each ring and allowed to roam freely. In Examples 1-6, 8, and 10, and Comparative Examples 1-4, 0.2 mL of the test aerosol was sprayed four times at the center of the room (1.5 m above the floor), with the direction slightly diagonally upward changing. In Example 7, 1.0 mL of the test aerosol was sprayed once at the center of the room (1.5 m above the floor), with the direction slightly diagonally upward changing. In Example 9, 0.4 mL of the test aerosol was sprayed four times at the center of the room (1.5 m above the floor), with the direction slightly diagonally upward changing. After spraying, the test insects were left for 30 minutes to be exposed to the chemical. Then, the glass plate, along with the plastic ring containing the test insects, was moved to a separate room, the test insects were fed, and the mortality rate was determined after another 24 hours. A mortality rate of 90-100% for German cockroaches was rated "A", 75-85% was rated "B", 50-70% was rated "C", and less than 50% was rated "D".

[0070] <Test to confirm control effectiveness against bed bugs> A total of four 20 x 20 cm glass plates enclosed in a 25 m³ space. 3The room was set up with four glass plates, and plastic rings approximately 10 cm in diameter, coated with petroleum jelly to prevent escape, were placed on top of each glass plate. The specified test insects (bed bugs: 5 individuals) were released into each ring and allowed to roam freely. In Examples 1-6, 8, and 10, and Comparative Examples 1-4, 0.2 mL of the test aerosol was sprayed four times at a slightly upward angle in the center of the room (1.5 m above the floor). In Example 7, 1.0 mL of the test aerosol was sprayed once at a slightly upward angle in the center of the room (1.5 m above the floor). In Example 9, 0.4 mL of the test aerosol was sprayed four times at a slightly upward angle in the center of the room (1.5 m above the floor). After spraying, the test insects were left for 30 minutes to be exposed to the chemical. Then, the glass plates, along with the plastic rings containing the test insects, were moved to a separate room, and the mortality rate of the test insects was determined after another 24 hours. A mortality rate of 90-100% for bed bugs was rated "A", 75-85% as "B", 50-70% as "C", and less than 50% as "D".

[0071] <Test to confirm control effectiveness against indoor dust mites> 25m of closed cotton cloth, each approximately 4cm in diameter. 3The aerosol was placed in the four corners of the room. In Examples 1-6, 8, and 10, and Comparative Examples 1-4, 0.2 mL of the aerosol was sprayed four times at a slightly upward angle in the center of the room (1.5 m above the floor). In Example 7, 1.0 mL of the aerosol was sprayed once at a slightly upward angle in the center of the room (1.5 m above the floor). In Example 9, 0.4 mL of the aerosol was sprayed four times at a slightly upward angle in the center of the room (1.5 m above the floor). 24 hours after spraying the aerosol, the cotton cloth was removed and placed in a 4 cm diameter petri dish, with 50 mg of the attractant medium placed in the center. Separately, approximately 10,000 house dust mites were released into a 9 cm diameter petri dish along with the medium, and the previously prepared 4 cm diameter petri dish was placed in the center. In addition, an untreated cotton cloth was used as the untreated group using the same procedure. Then, the number of mites that had invaded the cotton fabric after 24 hours was counted, and the repellency rate (%) was calculated according to the following formula (1). Repellent rate (%) = (mn) / m × 100 ···(1) m: Number of invading mites in the untreated area n: Number of invading mites in the treated area Then, products with a repellency rate of 90-100% for house dust mites were rated as "A", those with 75-85% as "B", those with 50-70% as "C", and those with less than 50% as "D".

[0072] <Floor surface stickiness confirmation test> 20 x 20 cm glass plate, 25 m 3The aerosols were placed in the four corners of the room. In Examples 1-6, 8, and 10, and Comparative Examples 1-4, 0.2 mL of the test aerosol was sprayed four times at a slightly upward angle from the center of the room (1.5 m above the floor). In Example 7, 1.0 mL of the test aerosol was sprayed once at a slightly upward angle from the center of the room (1.5 m above the floor). In Example 9, 0.4 mL of the test aerosol was sprayed four times at a slightly upward angle from the center of the room (1.5 m above the floor). After 30 minutes of spraying, the stickiness was evaluated in three stages by touching the surface of the glass plate with a fingertip to check the feel. Ten researchers scored the samples on a scale of 3 points (almost no stickiness), 2 points (slightly sticky), and 1 point (sticky). Samples with an average score of 2.4 to 3.0 were rated "A," those with an average score of 1.7 to 2.3 were rated "B," and those with an average score of 1.0 to 1.6 were rated "C."

[0073] The results of each verification test are shown in Table 2 below.

[0074] [Table 2]

[0075] The aerosols for pest and mite control in Examples 1-10 all exhibited excellent efficiency in preparation work such as weighing and mixing, and showed good results in pest and mite control in spatial spray treatment. In particular, Examples 1-6 and 8-10, in which the spray volume per spray of the metered-dose aerosol valve was 0.1-0.9 mL, resulted in less stickiness on the floor surface and were more suitable for indoor use. Furthermore, Examples 1, 2, 5, 9, and 10, which used n-tridecane, a normal paraffin with 11-16 carbon atoms, and Example 3, which used n-pentadecane, showed excellent pest and mite control effects in spatial spray treatment, while Examples 1, 2, 5, 9, and 10, which used n-tridecane, a normal paraffin with 12-14 carbon atoms, showed even better pest and mite control effects in spatial spray treatment. Furthermore, Examples 4, 6, and 7, which used Isopar M, an isoparaffin with 12 to 18 carbon atoms, as the saturated hydrocarbon organic solvent (b), and Example 8, which used isododecane, showed excellent pest and mite control effects in spatial spray treatment. Example 8, which used isododecane with 12 to 14 carbon atoms, showed even better pest and mite control effects in spatial spray treatment.

[0076] On the other hand, the aerosol of Comparative Example 1 was prepared by adding a small amount of profluthrin to cypermethrin as the pest and mite control component (a) in the aerosols of Example 1 and Example 5, adjusting the total content of the control component to 60 w / v%. However, compared to the aerosols of Example 1 and Example 5, the control effect against pests (especially German cockroaches) was inferior. This indicates that even when using multiple control components, the expected level of control effect cannot be obtained unless the combination is appropriate. In other words, even with a single control component, if the appropriate component is used as in the present invention, it is possible to obtain a practical pest and mite control effect. Furthermore, because the aerosol of Comparative Example 1 contains two or more pest and mite control components, it required more time and effort for preparation work (manufacturing work such as weighing and mixing) compared to the pest and mite control aerosols of Example 1 to 10, and was not necessarily satisfactory in terms of efficiency. Furthermore, a comparison between Comparative Examples 2 and 3 and Examples 1 to 10 revealed that including a saturated hydrocarbon-based organic solvent (b) with a boiling point of 175 to 300°C improved the pest and mite control effect in space spray treatment. A comparison between Comparative Example 4 and Examples 1 to 10 also revealed that a volume ratio (G / b) of 3.3 or higher with hydrocarbon-based organic solvent (b) improved the pest and mite control effect in space spray treatment. However, considering ease of use as an aerosol, a volume ratio (G / b) of 200 or less is appropriate.

[0077] <Measurement of volume-average particle diameter of sprayed particles> For the pest and mite control aerosols of Examples 2, 4, and 8, the volume-average particle size (Dv50) of the sprayed particles was measured at 25°C. Each aerosol was left to stand at room temperature set to 25°C for 2-3 hours to maintain a constant temperature of 25°C. For the measurement of the volume-average particle size (Dv50), a SPRAYTEC model STP5321 laser particle size distribution analyzer (manufactured by Malvern) was used at 25°C. The position of the aerosol was adjusted so that the distance between the laser beam, emitted from the laser light emitter to the light receiver, and the nozzle of the pest and mite control aerosol was 50 cm, and the sprayed particles passed perpendicularly through the laser beam. The aerosol's spray button was pressed once, and measurements were taken during spraying. The particle size distribution of the sprayed particles was analyzed by an automated calculation processing unit, and the 50% volume-average particle size (Dv50) of the sprayed particles based on the volume integral distribution was determined.

[0078] Measurements were taken three times, and the average value was calculated. The results are shown in Table 3.

[0079] [Table 3]

[0080] In Examples 2, 4, and 8, the volume-average particle size (Dv50) of the sprayed particles fell within the range of 15 to 80 μm, confirming that the sprayed particles emitted from the metered-dose aerosol valve were formed in a state suitable for controlling crawling insects and indoor dust mites through spatial treatment. The inventors have also confirmed that sprayed particles with volume-average particle sizes (Dv50) of approximately 15 μm, 50 μm, and 80 μm also exhibit a certain degree of effectiveness in controlling crawling insects and indoor dust mites through spatial treatment (data not shown). These volume-average particle sizes (Dv50) were appropriately adjusted by the composition of the aerosol concentrate (L), the components of the propellant, the ratio of the propellant, the internal pressure of the aerosol container, the shape of the nozzle, and the nozzle length. [Industrial applicability]

[0081] The aerosol for controlling pests and mites, and the method for controlling pests and mites of the present invention, can be used not only for indoor use but also in a wide range of applications for the purpose of controlling pests and mites.

Claims

1. A pest control aerosol product equipped with a metered-dose spray aerosol valve, In a pressure vessel, An aerosol concentrate (L) consisting only of permethrin (a), which is a pest control component, and a saturated hydrocarbon organic solvent (b) with a boiling point of 175 to 240°C, Propellant (G), It is enclosed and The aforementioned pest is the bed bug. The content of permethrin (a) in the aerosol concentrate (L) is 60 to 80 w / v%, The volume ratio (G / b) of the propellant (G) and the saturated hydrocarbon organic solvent (b) is set to 4.5 to 50. The spray volume per application is set to 0.2 to 0.4 mL. The spray particles emitted from the aforementioned quantitative spray aerosol valve are an aerosol product for pest control, with a volume-average particle diameter (Dv50) set to 15-40 μm at 25°C and a spray distance of 50 cm.

2. The aerosol product for pest control according to claim 1, wherein the nozzle in the aerosol valve for quantitative spraying is an obliquely upward-facing nozzle.

3. The aerosol product for pest control according to claim 1 or 2, wherein the volume ratio (L / G) of the aerosol concentrate (L) and the propellant (G) is set to 0.05 to 1.

4. The aerosol product for pest control according to any one of claims 1 to 3, wherein the saturated hydrocarbon organic solvent (b) is normal paraffin and / or isoparaffin.

5. It is configured as a metered-dose aerosol product that sprays a fixed amount into an indoor space, with a volume of 18.8 to 33.3 m³. ３ An aerosol product for pest control according to any one of claims 1 to 4.

6. A method for controlling pests using an aerosol product for pest control described in any one of claims 1 to 5, A pest control method that involves a treatment step of applying a certain amount of spray to an indoor space to control the pests in that indoor space.

7. The pest control method according to claim 6, wherein in the processing step, the aerosol product for pest control is sprayed into the air by pressing the metered-volume spraying aerosol valve multiple times.

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