Method for controlling pests and mites, and aerosol for controlling pests and mites

Abstract

To provide a simple pest and tick control method executable by using quantitative injection type aerosol.SOLUTION: A pest and tick control method using quantitative injection type aerosol includes an injection step for generating an atmosphere for spatial processing by injecting the quantitative injection type aerosol containing a pest and tick controlling component into a processing space, and a closing step for closing the processing space in which the atmosphere for spatial processing is generated within 60 minutes.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a method for controlling pests and mites using a metered-amount aerosol, and to an aerosol for controlling pests and mites. [Background technology]

[0002] Typical insecticides that target crawling pests such as cockroaches and house dust mites that roam floors and walls and are applied to areas where crawling pests and mites live or pass through include (1) fumigants, (2) full-volume aerosol sprays, (3) paint-on aerosols, and (4) baits, each of which has its own unique formulation.

[0003] (1) Fumigants and (2) total-discharge aerosols fall into the category of pharmaceuticals because they rapidly diffuse chemicals throughout a room, sealing the room for a predetermined period (usually 2–3 hours) to increase chemical concentration, and prohibit people from entering the room during that time. These formulations are characterized by their spatial treatment, in which the dispersed chemicals exert a high extermination effect against crawling pests and house dust mites throughout the entire treatment space. However, many of the chemicals used are generally easily decomposed by light after remaining on floors, etc., and are not very effective against, for example, cockroach eggs. Therefore, repeated application 2–4 weeks after surviving eggs hatch is considered effective. While these formulations have the advantage of requiring application only every 2–4 weeks, they require laborious procedures, such as pre-treatment of electrical appliances and tableware and post-treatment cleanup of sprayed sediment, and require special attention to chemical safety, making them difficult to use frequently.

[0004] On the other hand, (3) aerosol paints, which are applied locally to the surface, and (4) baits, which are applied spot-on, are quasi-drugs that have a mild effect on the human body, and are easier to use than (1) fumigants and (2) full-volume spray aerosols. However, since these are so-called localized treatments that are not spatial treatments but have an extermination effect on crawling pests and house dust mites only at the site where the chemical is applied, the contact efficiency between the chemical and the pests and mites is poor, and they do not necessarily provide an efficient extermination method.

[0005] In order to develop a quasi-drug that is a spatial treatment agent and targets crawling pests such as cockroaches and bedbugs or house dust mites, it is necessary to obtain pharmaceutical registration after undergoing strict screening, particularly regarding efficacy and safety, which is a high hurdle. Therefore, aside from products that do not require pharmaceutical registration, it has been thought that it would be difficult to develop a quasi-drug that can control crawling pests or house dust mites.

[0006] The present inventors previously conducted extensive research to develop a spatial treatment agent for controlling crawling pests and house dust mites that is a quasi-drug, aiming for a highly safe formulation that can be used in situations where people are present and that provides sufficient pest control when sprayed using a metered-amount aerosol, rather than (1) a fumigation agent or (2) a total-amount aerosol, which are used once every 2 to 4 weeks. As a result, they invented an extremely useful "method for controlling insects and mites" (see Patent Document 1), which is effective not only against crawling pests and house dust mites, but also against flying pests on the day of spraying. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 5517122 Summary of the Invention [Problem to be solved by the invention]

[0008] In the pest and mite control method of Patent Document 1, the aerosol spray characteristics are such that the spray particles after spraying are formed into floating particles and adhesive particles that adhere to walls and settle on floors, and crawling pests and indoor dust mites can be controlled by basically performing a metered spray treatment once every 1 to 2 days. However, in order to further improve the convenience of the pest and mite control method, it is desirable to reduce the application frequency from once every 1 to 2 days in the pest and mite control method of Patent Document 1 while ensuring control efficacy and safety.

[0009] The present invention has been made in consideration of the above problems, and aims to provide a simple method for controlling pests and mites that can be carried out using a metered dose aerosol, and an aerosol for controlling pests and mites. [Means for solving the problem]

[0010] The characteristic features of the method for controlling pests and mites according to the present invention for solving the above problems are as follows: A method for controlling pests and mites using a fixed-amount spray type aerosol, A spraying step of spraying a fixed-amount spray type aerosol containing pest and mite control ingredients into the treatment space to create an atmosphere for space treatment; a closing step of closing the treatment space in which the atmosphere for space treatment has been generated within 60 minutes; The purpose is to encompass the above.

[0011] According to the pest and mite control method of this configuration, spatial treatment is performed using a metered-dose aerosol, allowing for highly safe pest and mite control even in situations where people are present. In spatial treatment, a metered-dose aerosol containing a pest and mite control ingredient is sprayed into the treatment space, and after an atmosphere for spatial treatment is created, the treatment space is closed for 60 minutes or less, thereby improving the control effect against crawling pests and house dust mites. Compared to conventional pest and mite control methods, this pest and mite control method using spatial treatment can reduce the frequency of application of the formulation while ensuring control effect and safety.

[0012] In the method for controlling pests and mites according to the present invention, In the closing step, the closing time is preferably 15 minutes or more.

[0013] According to the pest and mite control method of this configuration, by setting the closing time in the closing step to 15 minutes or more, the closing time of the treatment space in which the atmosphere for spatial treatment is generated is 15 to 60 minutes, thereby achieving a high control effect against crawling pests and house dust mites while taking into consideration the convenience of the user, and reducing the frequency of application of the formulation.

[0014] In the method for controlling pests and mites according to the present invention, In the closing step, the closing time is preferably 20 to 40 minutes.

[0015] According to the pest and mite control method of this configuration, the treatment space in which the atmosphere for spatial treatment is generated is closed for 20 to 40 minutes, so that a reliable control effect is achieved against crawling pests and house dust mites, and the frequency of application of the formulation can be reduced.

[0016] In the method for controlling pests and mites according to the present invention, The metered-dose aerosol is prepared by filling an aerosol concentrate containing the pest and mite control ingredient and an organic solvent, and a propellant, into an aerosol container equipped with a metered-dose valve; The pest and mite control ingredient has a vapor pressure of 1 x 10 at 30°C. -4 Contains a hardly volatile compound with a vapor density of less than mmHg, The content of the pest and mite control component in the aerosol concentrate is 30 to 75 w / v %, The specific gravity of the aerosol concentrate is 0.85 to 1.15, The volume ratio (a / b) of the aerosol concentrate (a) and the propellant (b) filled in the aerosol container is preferably 10 / 90 to 50 / 50.

[0017] The present inventors have determined that, in order to improve the control effect against crawling pests, especially cockroaches, in spatial treatment, it is effective to form the spray particles after spraying into floating particles that float in the treatment space and adhesive particles that adhere to exposed parts in the treatment space, with adhesive particles being dominant, and further, to increase the ratio of adhesive particles that settle on the floor rather than adhere to walls, etc., among the adhesive particles. -4 It has been found that when using a hardly volatile compound with a vapor pressure of less than mmHg, the concentration of the control ingredient in the aerosol concentrate and the specific gravity of the aerosol concentrate are important factors that determine the behavior of adhesive particles related to sedimentation. According to the pest and mite control method of this configuration, by setting the content of the control ingredient in the aerosol concentrate and the specific gravity of the aerosol concentrate within the above-mentioned appropriate ranges, adhesive particles become dominant in the spray particles after spraying, thereby improving the control effect against crawling pests, particularly cockroaches.

[0018] In the method for controlling pests and mites according to the present invention, The pest and mite control ingredient has a vapor pressure of 2 x 10 at 30°C. -4 ~1×10 -2 It is preferable that the compound further contains a volatile pyrethroid compound having a vapor density of 1000 MPa or less.

[0019] According to the method for controlling pests and mites of this configuration, the pest and mite control ingredient has a vapor pressure of 2×10 at 30° C. -4 ~1×10 -2 By further containing a volatile pyrethroid compound with a viscosity of mmHg, in addition to the control effect of the hardly volatile compound against crawling pests and house dust mites, the volatile pyrethroid compound can also exert an excellent control effect against flying pests.

[0020] In the method for controlling pests and mites according to the present invention, The organic solvent preferably contains a lower alcohol having 2 to 3 carbon atoms and / or a higher fatty acid ester having 16 to 20 carbon atoms.

[0021] According to the pest and mite control method of this configuration, the organic solvent contains a lower alcohol having 2 to 3 carbon atoms and / or a higher fatty acid ester having 16 to 20 carbon atoms, which improves the uniformity of diffusion of spray particles and enables more effective control of crawling pests and house dust mites through spatial treatment.

[0022] In the method for controlling pests and mites according to the present invention, The volume of the metered injection valve per injection is preferably 0.2 to 5.0 mL.

[0023] According to the pest and mite control method of this configuration, since the spray volume per injection from the metered injection valve is within the above-mentioned range, the amount of pest and mite control component released can be appropriate by spraying the aerosol concentrate once or several times, making it easier to carry out the injection process.

[0024] In the method for controlling pests and mites according to the present invention, In the injection process, a closed 25m 3 When a fixed amount of the fixed-amount aerosol is sprayed into the treatment space, the air concentration of the hardly volatile compound in the treatment space immediately after spraying is defined as C1, In the closing step, after the treatment space is closed, the treatment space is maintained under natural ventilation conditions, and when the air concentration of the non-volatile compound in the treatment space after 1 hour and 30 minutes from the time of injection is C2, The following formula (1): R = C2 / C1 × 100 (1) It is preferable that the residual concentration in the air R defined by is 0.04 to 2.0%.

[0025] According to the pest and mite control method of this configuration, the residual concentration rate R in the air defined by the above formula (1) is 0.04 to 2.0%, so that sufficient pest and mite control effects can be expected, and there are no safety concerns for people or pets in the treated space after application.

[0026] The characteristic features of the aerosol for controlling pests and mites according to the present invention for solving the above problems are as follows: An aerosol for controlling pests and mites, which is obtained by filling an aerosol concentrate containing a pest and mite control ingredient and an organic solvent, and a propellant, into an aerosol container equipped with a metered injection valve, The aerosol container and / or the packaging material of the aerosol container have a marking indicating that the treatment space should be closed after the aerosol is sprayed.

[0027] According to the pest and mite control aerosol of this configuration, by indicating on the aerosol container and / or the packaging material of the aerosol container that the treatment space should be closed after spraying the aerosol, the user can create an atmosphere for spatial treatment in the treatment space simply by following the treatment procedure according to the indication, thereby improving the control effect against crawling pests and house dust mites. Thus, with the pest and mite control aerosol of this configuration, treatment for pest and mite control can be performed safely even in situations where people are present, and the frequency of application of the formulation can be reduced compared to conventional pest and mite control products.

[0028] In the aerosol for controlling pests and mites according to the present invention, The indication of closure is an indication of closure for n minutes, and n is preferably a number equal to or less than 60 or a continuous range of numbers.

[0029] According to the pest and mite control aerosol of this configuration, the aerosol container and / or the packaging material of the aerosol container will be labeled to close the treatment space within 60 minutes after spraying the aerosol, and by the user closing the treatment space in accordance with this labeling, the control effect against crawling pests and house dust mites can be improved while taking into consideration the user's convenience. Compared to conventional pest and mite control products, this aerosol for pest and mite control by spatial treatment can reduce the frequency of application of the formulation while ensuring control effect and safety.

[0030] In the aerosol for controlling pests and mites according to the present invention, The n is preferably a number equal to or greater than 15 or a continuous range of numbers.

[0031] According to the pest and mite control aerosol of this configuration, the aerosol container and / or the packaging material of the aerosol container will be labeled to close the treatment space for 15 to 60 minutes after spraying the aerosol, and by the user closing the treatment space in accordance with this labeling, a reliable control effect is achieved against crawling pests and house dust mites. Compared to conventional pest and mite control products, this aerosol for pest and mite control by spatial treatment can reduce the frequency of application of the formulation while ensuring control effect and safety. DETAILED DESCRIPTION OF THE INVENTION

[0032] The method for controlling insect pests and mites and the aerosol for controlling insect pests and mites of the present invention will be described below. However, it is not intended that the present invention be limited to the embodiments and examples described below.

[0033] [Aerosol for pest and mite control] The pest and mite control aerosol of the present invention is a metered-dose aerosol used to control crawling pests and house dust mites through spatial treatment. It is constructed by filling an aerosol concentrate containing a pest and mite control ingredient and an organic solvent, as well as a propellant, into an aerosol container equipped with a metered-dose valve. In the following description, the "pest and mite control ingredient" will simply be referred to as the "control ingredient." The aerosol container and / or its packaging bear instructions for use, instructing users to close the treatment space for a specific time or time range, to help or encourage them to use the pest and mite control aerosol of the present invention in accordance with the spatial treatment principle of the present invention. For example, instructions such as "Close the room before use," "Close windows and doors before use," "Close the treatment space for 30 minutes after spraying the aerosol," and "Close the treatment space for 15 to 60 minutes after spraying the aerosol" are displayed. Here, "spatial treatment" in the present invention refers to a treatment in which a control component is widely dispersed throughout the treatment space to control crawling pests and house dust mites throughout the entire treatment space. Compared to localized treatments in which the control component is applied locally to the surface or spot, and only the treated area is controlled, spatial treatments have superior contact efficiency with crawling pests and house dust mites, and therefore can be expected to be highly effective. However, attention must be paid to safety for people in the treatment space. Therefore, the aerosol for controlling pests and mites of the present invention uses a control component that is highly safe even in situations where people are present, and employs a method of use in which the treatment space is closed after spraying the aerosol according to the instructions on the aerosol container and / or the aerosol container's packaging. The treatment space is closed for no more than 60 minutes, preferably 15 to 60 minutes, and more preferably 20 to 40 minutes. Here, "closing" the "treatment space" means that the treatment space is desirably sealed off completely from the outside, but in actual houses, etc., exchange of air between the inside and outside may occur through the attic, ventilation openings, etc. Therefore, the meaning of "closing the treatment space" should be determined based on the ordinary lifestyle sense of ordinary consumers, who are the main users of pest and mite control aerosols.Specifically, if the treatment space is a living room, turning off the ventilation fan and closing the living room windows and doors can ensure the space is closed. Note that a warning such as "Close the treatment space for 30 minutes after aerosol spraying" is intended to ensure the 30-minute closure period for the treatment space after aerosol spraying. Therefore, as long as the 30-minute closure period for the treatment space after aerosol spraying is ensured, the treatment space can be closed before, simultaneously with, or after aerosol spraying. Regarding the closed state and ventilation rate in a typical home, the "Research Report: Survey for the Measurement and Comparison of Airborne Concentrations of Indoor Pesticides - Basic Research on the Behavior and Risk Assessment of Indoor Pesticides" (2004) reported that even when the windows and doors are closed, the ventilation rate is not zero, but rather between 0.06 and 0.81 times per hour (based on a method for measuring ventilation rates in living rooms using carbon dioxide). The pest and mite control aerosol of the present invention can create an atmosphere suitable for spatial treatment in the treatment space simply by performing such a simple operation, and is therefore expected to provide practically sufficient control effects against crawling pests and house dust mites. In this specification, the term "control effect" refers to the control effect based on the knockdown effect and lethal effect, as well as the repellent effect. Even if the control effect is low, there are many situations in which pest control can be achieved in practice as long as there is sufficient repellent effect.

[0034] <Concentrated aerosol> The pest control ingredient, which is one of the main components of the aerosol concentrate, has a vapor pressure of 1 x 10 at 30°C. -4 A hardly volatile compound with a vapor pressure of less than 2 x 10 mmHg at 30°C. -4 ~1×10 -2 Examples include volatile compounds with a viscosity of mmHg.

[0035] In the aerosol for controlling pests and mites of the present invention, the control ingredient is a compound having a vapor pressure of 1×10 at 30° C. -4Preferably, the composition contains a hardly volatile compound having a vapor pressure of less than 100 psi (1 mmHg). Examples of the hardly volatile compound include compounds for controlling crawling pests, such as cockroaches, and / or compounds for controlling mites, primarily for controlling house dust mites. Examples of compounds for controlling crawling pests include pyrethroid compounds such as fenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox, and imiprothrin; silicon compounds such as silafluofen; organophosphorus compounds such as dichlorvos and fenitrothion; carbamate compounds such as propoxur; neonicotinoid compounds such as dinotefuran, imidacloprid, and clothianidin; fipronil; and indoxacarb. Among these, fenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox, and dinotefuran are preferred. When optical isomers or geometric isomers based on asymmetric carbons exist in the acid component or alcohol moiety of a pyrethroid compound, these isomers and any mixtures thereof are also included in the creeping insect control compound. Examples of mite control compounds include amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, p-menthane-3,8-diol, 3-iodo-2-propynyl butylcarbamate, fenothrin, and DEET. Among these, amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dibutyl phthalate, p-menthane-3,8-diol, fenothrin, and DEET are preferred. When a certain amount of the pest and mite control aerosol of the present invention is sprayed into an indoor treatment space, the spray particles mainly settle on the floor surface as adhesive particles, but by containing the above-mentioned hardly volatile compound as a control ingredient, it shows excellent control effect particularly against crawling pests and house dust mites in the treatment space.Furthermore, by including the above-mentioned hardly volatile compound as the control ingredient, volatilization of the control ingredient from the adhesive particles that have settled on the floor surface into the air is suppressed. Due to this mechanism of action, the aerosol for controlling pests and mites of the present invention is highly safe and can be used even in situations where people are present.

[0036] In the aerosol for controlling pests and mites of the present invention, in addition to the above-mentioned hardly volatile compound, a compound having a vapor pressure of 2×10 at 30° C. is used as the control ingredient. -4 ~1×10 -2 The composition may further contain a volatile pyrethroid compound having a viscosity of 1000 ppm or less (mmHg). Examples of volatile pyrethroid compounds include metofluthrin, profluthrin, transfluthrin, empenthrin, telallethrin, and furametrin. Among these, metofluthrin, profluthrin, and transfluthrin are preferred in consideration of vapor pressure, stability, basic insecticidal efficacy, and the like. When optical isomers or geometric isomers based on asymmetric carbons exist in the acid component or alcohol moiety of these compounds, each of these isomers and any mixture thereof are also included in the volatile pyrethroid compound. When a certain amount of the aerosol for controlling pests and mites of the present invention is sprayed in an indoor treatment space, a certain amount of the spray particles remain suspended in the air. However, by including the above-mentioned volatile pyrethroid compound as a control ingredient, it can also exert a control effect against flying pests. Furthermore, when a volatile pyrethroid compound is partially attached to a floor or wall surface together with a hardly volatile compound, the control effect against crawling pests and / or house dust mites can be synergistically enhanced.

[0037] The content of the pest control ingredient in the aerosol concentrate is 8 to 80 w / v%, preferably 30 to 75 w / v%. When the content of the pest control ingredient in the aerosol concentrate is within the above range, the pest control ingredient is easily dissolved in the organic solvent, and when the aerosol is sprayed, the spray particles are formed in an optimal state. By closing the treatment space after spraying the aerosol, an appropriate pest control effect can be obtained. The time for closing the treatment space is within 60 minutes, preferably 15 to 60 minutes, and more preferably 20 to 40 minutes.

[0038] The aerosol concentrate contains an organic solvent in addition to the control ingredients. The organic solvent can be used to prepare the aerosol concentrate by dissolving the control ingredients, and can form optimal spray particles when the prepared aerosol concentrate is sprayed. In the pest and mite control aerosol of the present invention, examples of the organic solvent include lower alcohols having 2 to 3 carbon atoms, such as ethanol and isopropanol (IPA), hydrocarbon solvents such as normal paraffin and isoparaffin, higher fatty acid esters having 16 to 20 carbon atoms, such as isopropyl myristate (IPM) and hexyl laurate, glycol ether solvents having 3 to 10 carbon atoms, and ketone solvents. Among these, lower alcohols having 2 to 3 carbon atoms and higher fatty acid esters having 16 to 20 carbon atoms are preferred. Lower alcohols having 2 to 3 carbon atoms are particularly preferred because they allow for uniform dispersion of spray particles and are less likely to leave stickiness on the floor.

[0039] After spraying, the spray particles are formed as floating particles that float in the treatment space or as adhesive particles that adhere to exposed areas within the treatment space. However, the inventors conducted research to further emphasize adhesive particles and, among the adhesive particles, to increase the proportion of adhesive particles that settle to floor surfaces rather than adhering to walls and other surfaces. As a result, they discovered that the specific gravity of the aerosol concentrate, along with the content of the control ingredient in the aerosol concentrate, is an important factor determining the behavior of adhesive particles related to settling. The specific gravity of the aerosol concentrate is 0.78 to 1.20, preferably 0.85 to 1.15, and more preferably 0.89 to 1.10. When the specific gravity of the aerosol concentrate is within the above range, when a certain amount of the aerosol for controlling pests and mites of the present invention is sprayed into an indoor treatment space, the spray particles settle mainly as adhesive particles to the floor. Therefore, by closing the treatment space after spraying the aerosol, appropriate control effects can be achieved. The treatment space is closed for a time period of 60 minutes or less, preferably 15 to 60 minutes, and more preferably 20 to 40 minutes. Furthermore, when the specific gravity of the aerosol concentrate is within the above range, the adhesive particles will penetrate into gaps and hidden areas during the process of settling, and therefore, when a pyrethroid compound is used as the pest control ingredient, a flushing effect that will cause cockroaches and other insects to fly out from gaps and hidden areas can be fully expected.

[0040] In addition to the above components, the aerosol concentrate may also contain, as appropriate, antifungal agents, antibacterial agents, disinfectants, fragrances, deodorizers, stabilizers, antistatic agents, antifoaming agents, excipients, etc., which are intended to target molds, fungi, etc. Examples of antifungal agents, 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 ortho-phenylphenol. Further, examples of fragrances include aromatic components such as orange oil, lemon oil, lavender oil, peppermint oil, eucalyptus oil, citronella oil, lime oil, yuzu oil, jasmine oil, cypress oil, green tea essential oil, limonene, α-pinene, linalool, geraniol, phenylethyl alcohol, amyl cinnamic aldehyde, cumin aldehyde, and benzyl acetate, as well as fragrance components containing leaf alcohol and leaf aldehyde, known as "green scents."

[0041] Because the pest and mite control aerosol of the present invention is sprayed in small amounts, there is no need to be particularly concerned about the risk of fire. However, to minimize the risk of fire, a water-based formulation can be used. In this case, the amount of water contained in the aerosol concentrate is preferably approximately 10 to 50 v / v%, and a small amount of a nonionic surfactant may be added as a solubilizing aid, as long as it does not affect the spray pattern of the spray particles. Examples of nonionic surfactants include ethers such as polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, and polyoxyethylene alkylamino ethers; fatty acid esters such as polyethylene glycol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene glycerin fatty acid esters; polyoxyethylene styrenated phenol; and polyalkalolamides of fatty acids. Ethers are particularly preferred.

[0042] <Propellant> Propellants used in the aerosol for controlling insects and mites of the present invention include liquefied gases such as liquefied petroleum gas (LPG), dimethyl ether (DME), and hydrofluoroolefins, as well as nitrogen gas, carbon dioxide gas, nitrous oxide, and compressed air. The above propellants can be used alone or in a mixture, but those containing LPG as the main component are easy to use.

[0043] In the aerosol for controlling pests and mites of the present invention, the volume ratio (a / b) of the aerosol concentrate (a) to the propellant (b) filled in the aerosol container is adjusted to 10 / 90 to 50 / 50 by volume. If the volume ratio (a / b) is within the above range, a sufficient amount of the control component can be uniformly dispersed over the entire floor surface.

[0044] The aerosol for controlling insect pests and mites of the present invention preferably has a spray volume of 0.2 to 5.0 mL per spray from the metered spray valve. If the spray volume is within the above range, it can be sprayed in a room with a volume of 18.8 to 33.3 m, which corresponds to a room of 4.5 to 8 tatami mats. 3 (Area 7.5~13.3m 2 By spraying the pest and mite control aerosol once or several times in a treatment space (2.2 to 3.0 m in height), the amount of control component released is appropriate, and a practically sufficient control effect against crawling pests and / or house dust mites can be obtained in the treatment space.

[0045] The pest and mite control aerosol of the present invention preferably has a spray force of 5 to 50 gf at a distance of 5 cm from the nozzle. If the spray force is within the above range, most of the control component will quickly settle and adhere to the entire floor surface of the indoor treatment space, providing a practically sufficient control effect against crawling pests and mites. If the spray force is less than 5 gf, the spray force will be insufficient and the spread across the entire floor surface will tend to be insufficient. On the other hand, even if the spray force exceeds 50 gf, there is a risk that good spread will not be achieved. Such spray force can be appropriately adjusted by the composition of the aerosol concentrate, the internal pressure of the aerosol container, the shape of the nozzle, etc.

[0046] The shapes of the nozzle, nozzle, container, etc. of the pest and mite control aerosol of the present invention can be selected appropriately depending on the application, purpose of use, etc. For example, it can be a tabletop type with a button that is pressed from above to spray and a nozzle that faces diagonally upward, or it can be designed as a small, portable container.

[0047] [Methods for controlling pests and mites] The pest and mite control method of the present invention involves a spraying step in which a metered-dose aerosol containing a control component, such as the pest and mite control aerosol of the present invention, is sprayed into a treatment space to create an atmosphere for spatial treatment, and a closing step in which the treatment space in which the atmosphere for spatial treatment has been created is closed for a certain period of time. In the closing step, the treatment space is closed. The treatment space is closed for a period of time within 60 minutes, preferably 15 to 60 minutes, and more preferably 20 to 40 minutes. In the closing step, the treatment space is preferably closed continuously for a specified period of time. However, for example, when a user temporarily opens the treatment space to exit, the treatment space can be closed discontinuously so that the total closure time reaches the specified period, as long as the temporary opening is short enough to not impair the effects of the present invention.

[0048] When using fumigants or total-volume aerosol sprays, people are not allowed to enter the treatment space during the chemical treatment, and the treatment space must be closed for 2 to 3 hours. In addition, electrical appliances and tableware must be cured before treatment, and the sprayed sediment must be cleaned up after treatment. In contrast, the pest and mite control method of the present invention uses a metered-volume aerosol spray, which allows the amount of control component sprayed into the treatment space during the spraying process to be kept to a minimum. Therefore, the pest and mite control method of the present invention eliminates the pre-treatment preparation procedures and post-treatment cleanup of the sprayed sediment required with fumigants and total-volume aerosol sprays. Furthermore, because the pest and mite control method of the present invention performs spatial treatment using a metered-volume aerosol spray, pest and mite control treatment can be safely carried out without leaving the indoor space that serves as the treatment space. Therefore, the pest and mite control method of the present invention employs a spatial treatment method that is more effective than local treatment methods, while providing convenience that cannot be imagined from spatial treatments using conventional fumigants or total-volume spray aerosols, making its practicality immeasurable.

[0049] In the spraying process, the amount of the hardly volatile compound released into the air as a pest control ingredient is 0.1 to 50 mg / m 3 is preferably 0.5 to 50 mg / m 3 It is more preferable that the amount of the hardly volatile compound released into the air is within the above range, and excellent control effects against crawling pests and house dust mites can be obtained while maintaining high safety even in situations where people are present. When an aerosol for controlling pests and mites is used, which is equipped with a metered injection valve with a spray volume of 0.2 to 5.0 mL per spray, the volume of the aerosol for controlling pests and mites is 18.8 to 33.3 m, which corresponds to a room of 4.5 to 8 tatami mats. 3 (Area 7.5~13.3m 2 When the spraying process is carried out in an indoor treatment space (2.2 to 3.0 m high), the amount of the control ingredient released into the air by one spray is usually 0.1 to 50 mg / m 3 In larger indoor treatment spaces, the amount of pest control component released into the air is set to 0.1 to 50 mg / m depending on the volume of the treatment space. 3By spraying multiple times so that the same pest control effect can be obtained regardless of the size of the treatment space, it is possible to obtain the same pest control effect regardless of the size of the treatment space. Even when using an aerosol equipped with a metered injection valve with a single injection volume of 0.2 to 0.9 mL, the amount of pest control component released into the air is 0.1 to 50 mg / m 3 By appropriately adjusting the number of sprays so that the number of sprays is as follows, an excellent control effect against crawling pests and house dust mites can be obtained.

[0050] In the method for controlling pests and mites of the present invention, the spraying step is carried out in a closed 25m 3 When an aerosol for controlling insects and mites is sprayed into a treatment space, the air concentration of the control ingredient measured in the treatment space immediately after spraying is defined as C1, and after the closing process, the treatment space is maintained under natural ventilation conditions, and the air concentration of the control ingredient measured in the treatment space 1 hour and 30 minutes after spraying is defined as C2. The following formula (1): R = C2 / C1 × 100 (1) It is preferable that the residual concentration in the air R, defined as: is 0.04 to 2.0%. Here, "under natural ventilation conditions" is assumed to be a situation where windows are slightly opened or doors are opened to enter and exit, and means that the ventilation rate is 0.8 to 1.0 times / hour. The residual concentration in the air R is an index of control effect and safety defined in the present invention, and if the residual concentration in the air R is within the above range, sufficient pest and mite control effect can be expected, and it is assumed that there will be no safety concerns for people and pets in the treated space after application. The amount of control component released into the air in the spraying step is 0.1 to 50 mg / m 3In this case, the closing time of the treatment space in the closing step can be set to within 60 minutes, preferably 15 to 60 minutes, and more preferably 20 to 40 minutes, and the residual air concentration R can be set to 0.04 to 2.0% by adjusting the spraying conditions in the spraying step. Measurement of the air concentration of the pest control ingredient must be in accordance with the "Guidelines for Measuring Indoor Air Concentrations of Insecticides as Over-the-Counter Drugs and Quasi-drugs" issued by the Ministry of Health, Labor and Welfare. In this guideline, the ventilation conditions during measurement are set at 0.5 times / hour as the average condition, in accordance with the aforementioned "Research Report: Survey for Measuring and Comparing Air Concentrations of Insecticides Used Indoors - Basic Research on the Behavior and Risk Assessment of Indoor Insecticides" (2004). In the test conditions of the present invention, the ventilation rate in the closed state was set at 0.2 to 0.4 times / hour, which is more stringent in terms of safety, and the optimal closing time in the closing step was identified by verifying spraying performance and effectiveness. After the closing process was completed, natural ventilation conditions were restored for 1 hour and 30 minutes from the time of spraying (including situations such as slightly opening windows or opening doors to enter and exit, and a ventilation rate of 0.8 to 2.0 times / hour is generally expected, but the test to measure the residual air concentration rate R was conducted at a ventilation rate of 0.8 to 1.0 times / hour), after which the room was opened to ventilation rates of 2 times / hour or more. The ventilation rate was measured using the method for measuring ventilation rates in occupied rooms using carbon dioxide gas described in the aforementioned "Research Report: Survey for measuring and comparing air concentrations of insecticides used indoors - Basic research on the behavior and risk assessment of insecticides used indoors" (2004).

[0051] The pest and mite control method of the present invention can be adjusted as appropriate depending on the usage conditions, but is preferably carried out once every 1 to 5 days. As described above, in the pest and mite control method of the present invention, the control effect against crawling pests and house dust mites can be improved by carrying out a closing step after the spraying step. Therefore, even if the method is carried out once every 1 to 5 days, practically sufficient control effect against crawling pests and house dust mites can be expected. Furthermore, compared to conventional spatial treatment methods, the application frequency is reduced, resulting in excellent convenience. Note that, as long as the closing time of the treatment space after aerosol spraying is ensured to be at least a predetermined time, the spraying step can also be carried out after the closing operation. Furthermore, it is naturally possible to carry out the spraying step and the closing operation simultaneously. Thus, the pest and mite control method of the present invention has a simple treatment procedure, yet can reduce the application frequency of the pest and mite control aerosol. Furthermore, by using a volatile pyrethroid compound in combination with the pest and mite control aerosol, it is possible to impart control effect against flying pests.

[0052] The method for controlling pests and mites of the present invention can be used to control cockroaches such as the German cockroach, the American cockroach, and the Siberian cockroach, bedbugs such as the bedbug (cimex lectularius) and the Taiwanese bedbug (Nettite cimex), stink bugs such as the brown marmorated stink bug, ants such as the Japanese wood ant, the reticulated ant, the brown ant, the house ant, the red fire ant, and the fire ant, spiders such as the huntsman spider, the spotted house spider, and the redback spider, millipedes, centipedes such as the Japanese stag beetle, pill bugs, woodlouse, termites such as the Formosan termite and the Japanese termite, caterpillars, and burrs and other crawling pests such as red flour beetles, maize weevils, beetles, booklice, pill bugs, and woodlice, as well as house dust mites such as flour mites, Tyrophagus putrescentiae, house dust mites, dust mites, chigger mites, and Dermatophagoides pteronyssinus, as well as mosquitoes such as Culex pipiens, Aedes albopictus, Aedes aegypti, and Culex pipiens, flies such as house flies and flesh flies, small flies, moths, midges, bees, and moths. It is particularly effective in controlling cockroaches such as the German cockroach, the American cockroach, and the Siberian cockroach; bedbugs such as bedbugs (cimex), and the Taiwanese bedbug (Nettite cimex); ants such as Japanese wood ants, reticulated ants, brown ants, house ants, red fire ants, and fire ants; crawling pests such as red flour beetles, maize weevils, silverfish, booklice, pill bugs, and woodlice; and indoor dust mites such as flour mites, Tyrophagus putrescentiae, house dust mites, dust mites, chigger mites, and Dermatophagoides pteronyssinus. [Example]

[0053] The pest and mite control method of the present invention was examined in more detail by comparing Examples 1 to 20, in which the treatment space was closed for 60 minutes or less, with Comparative Example 1, in which the treatment space was closed for 70 minutes. For reference, similar examinations were also conducted on a case in which the treatment space was closed for a short period of 10 minutes (Reference Example 1), and on cases in which the treatment space was closed for a period of 60 minutes or less like Examples 1 to 19, but the composition, specific gravity, or ratio of the aerosol concentrate to the propellant deviated from those of the Examples (Reference Examples 2 to 7).

[0054] Example 1 An aerosol concentrate was prepared by dissolving the non-volatile pest control ingredient fenothrin (53 w / v%) and the volatile pyrethroid pest control ingredient metofluthrin (0.7 w / v%) in ethanol. The specific gravity of this aerosol concentrate was 0.93. 12 mL of this aerosol concentrate (a) and 18 mL of liquefied petroleum gas (b) as a propellant were pressurized into a 1.0 mL aerosol container with a metered spray valve (aerosol container) so that the volume ratio (a / b) was 40 / 60 by volume, yielding an aerosol for pest and mite control. The aerosol's spray force at a distance of 5 cm was 28 gf, and the aerosol container and the shrink film covering it bore a product label (instructions for use) stating, "Close off the indoor space for 30 minutes after spraying the fixed amount."

[0055] Volume 25m 3 room (equivalent to a 6-tatami room, area 10m 2 The room was closed without covering the television, cupboards, and other items placed in it. The pest and mite control aerosol was sprayed at a slight angle upward in the center of the room (1.5 m above the floor) to treat the space. The room was then closed for 30 minutes (ventilation rate: 0.2-0.4 times / hour), thereby implementing the pest and mite control method of the present invention. The room was then left under natural ventilation conditions (ventilation rate: 0.8-1.0 times / hour) as in a typical home until 1 hour and 30 minutes had elapsed from the time of spraying, and then left open for a further 24 hours after spraying to expose the aerosol to the aerosol. Despite remaining in the room throughout this period, no health issues were observed, and almost no spray sediment was observed, so no post-treatment cleaning was required. Over the following several days, the aerosol provided practical control effects against crawling pests such as cockroaches, ants, and beetles, while also repelling house dust mites.

[0056] Furthermore, the fenothrin air concentration (C1) immediately after spraying and the fenothrin air concentration (C2) were measured 1 hour after the room was closed for 30 minutes and then returned to natural ventilation (1 hour and 30 minutes after spraying). The residual air concentration calculated using the above-mentioned formula (1) was 0.6%. In other words, with the pest and mite control method of the present invention, simply closing the room for 30 minutes allows most of the control ingredient to settle and adhere to the entire floor surface, providing control effects for several days. Furthermore, the residual air concentration of the control ingredient was 0.6%, confirming that there is almost no risk of safety issues due to inhalation of the airborne control ingredient. Furthermore, although cockroaches were observed flushing out after spraying, it was also found that a sealing period of 15 minutes or longer is optimal to prevent cockroaches from escaping from the room.

[0057] Examples 2 to 18 Using the same procedure as in Example 1, various pest and mite control aerosols were prepared with the formulations shown in Table 1, and the pest and mite control method of the present invention was carried out for the closing time shown in Table 1.

[0058] Comparative Example 1 In Comparative Example 1, the closed time of the treatment space was set to 70 minutes, which is longer than 60 minutes. An aerosol for controlling pests and mites was prepared according to the procedure of Example 1 with the formulation shown in Table 2, and a method for controlling pests and mites outside the scope of the present invention was carried out.

[0059] [Reference examples 1 to 7] Using the same procedure as in Example 1, various pest and mite control aerosols were prepared with the formulations shown in Table 2, and the pest and mite control method of the present invention was carried out for the closing time shown in Table 2.

[0060] [Table 1]

[0061] [Table 2]

[0062] After carrying out the pest and mite control methods of Examples 1 to 18, Comparative Example 1, and Reference Examples 1 to 7, the following tests were carried out. For house dust mites, the extermination effect was first examined, and if the extermination effect was poor, the repellent effect was evaluated. The test results are shown in Table 3.

[0063] (1) Effective against creeping pests A total of 12 20 x 20 cm glass plates (four each for German cockroaches, American cockroaches, and Japanese wood ants) were enclosed to create a chamber with a volume of 25 m. 3 Room (area 10m 2 The glass plates were placed at the four corners of a room, and a plastic ring approximately 20 cm in diameter was placed on each plate. A designated test insect (five female German cockroaches, five larvae of American cockroaches, and five Japanese wood ants) was released into each ring and allowed to roam freely. A fixed amount of the test aerosol was sprayed at a slight upward angle in the center of the room (1.5 m above the floor). Immediately after spraying, the room was closed (ventilation rate: 0.2-0.4 times / hour) for the time shown in Tables 1 and 2. The room was then left under natural ventilation conditions (ventilation rate: 0.8-1.0 times / hour) for 1.5 hours from the time of spraying. The glass plates were then exposed to the insecticide in an open state for 24 hours. The rings containing the test insects were then moved to another room, where they were fed. The mortality rate of the test insects was determined after a further 24 hours.

[0064] (2) Effectiveness against indoor dust mites Eight waist-high petri dishes, each 9 cm in diameter and 6 cm in height (four each for Dermatophagoides farinae and Tyrophagus putrescentiae), are enclosed to form a 25 m 3 Room (area 10m 2 ) were placed in the four corners of a room, and approximately 200 test mites of each type were placed in waist-high petri dishes for testing. A fixed amount of the test aerosol was sprayed in a slightly upward diagonal direction in the center of the room (1.5 m above the floor). Immediately after spraying, the room was closed for the time shown in Tables 1 and 2 (ventilation rate: 0.2-0.4 times / hour), and then left under natural ventilation conditions for a typical home (ventilation rate: 0.8-1.0 times / hour) until 1 hour and 30 minutes had elapsed from the time of spraying. The room was then left open and exposed to the agent for a further 24 hours from the time of spraying. The number of killed test mites was counted, and the mortality rate (%) was calculated.

[0065] (3) Repellent effect against indoor dust mites In the above-mentioned "(2) Efficacy against House Dust Mites" test, cotton cloths approximately 4 cm in diameter were placed in the four corners of a room in place of test mites and sprayed with a fixed amount of test aerosol. Immediately after spraying, the room was closed for the time shown in Tables 1 and 2 (ventilation rate: 0.2-0.4 times / hour). The room was then left under natural ventilation conditions (ventilation rate: 0.8-1.0 times / hour) for 1 hour and 30 minutes from the time of spraying, and then left open for 24 hours. The cotton cloths were then removed and placed in a 4 cm petri dish, with 50 mg of attractant medium placed in the center. Separately, approximately 10,000 test house dust mites (Dermatophagoides farinae) or Tyrophagus putrescentiae (Tyrophagus putrescentiae) were released into a 9 cm petri dish along with the medium, and the previously prepared 4 cm petri dish was placed in the center of the 9 cm petri dish. Similarly, a control group was prepared using cotton cloth that had not been treated with the test aerosol. After 24 hours, the number of mites that had invaded the cotton fabric was counted and calculated using the following formula (2): Mite repellency rate (%) = [(Number of mites invaded in the untreated area - Number of mites in the treated area) / Number of mites invaded in the untreated area] × 100 (2) The mite repellency rate (%) was calculated based on the above.

[0066] (4) Uniform diffusion of the control component Closed volume: 25m 3 Room (area 10m 2 20 x 20 cm glass plates were placed at six to eight locations on the floor of a room. A fixed amount of the test aerosol was sprayed at a slight upward angle in the center of the room (1.5 m above the floor). Immediately after spraying, the room was closed for the time shown in Tables 1 and 2 (ventilation rate: 0.2-0.4 times / hour). After that, the room was left for one hour under natural ventilation conditions typical of a typical home (ventilation rate: 0.8-1.0 times / hour). All glass plates were then removed, and the adhering pesticides were washed with acetone and analyzed by gas chromatography. The variation in the adhering pesticides between each glass plate was analyzed, and the uniformity of the spray droplet dispersion was evaluated. The results were ranked on a four-point scale: ◎, ○, △, and ×, with the best dispersion uniformity indicated.

[0067] (5) Residual concentration of the control component in the air Closed volume: 25m 3 Room (area 10m 2 A fixed amount of the test aerosol was sprayed at a slight angle upwards in the centre of the room (1.5 m above the floor). An air collection tube (a glass tube filled with silica gel and both ends plugged with absorbent cotton) was placed 50 cm behind the centre of the room (130 cm from the wall) and 120 cm above the floor, and immediately after spraying, it was connected to a vacuum pump and a fixed amount of air was sucked in. The air collection tube was washed with acetone, and the amount of the captured control component was analysed by gas chromatography (Shimadzu Corporation, Model GC1700). Based on the analytical values ​​obtained, the air concentration (C1) (mg / m) of the control component immediately after spraying was calculated. 3 Furthermore, immediately after injection, the room was closed for the time shown in Tables 1 and 2 (ventilation rate: 0.2 to 0.4 times / hour), and then the same treatment was carried out after 1 hour and 30 minutes had passed under natural ventilation conditions for a general house (ventilation rate: 0.8 to 1.0 times / hour). The air concentration (C2) (mg / m 3 ) was obtained. Then, the residual concentration in the air (%) was calculated from C1 and C2 using the above formula (1).

[0068] [Table 3]

[0069] The test results showed that in Examples 1 to 18, after spraying a certain amount, the spray particles were dispersed almost uniformly over the entire floor surface, and within 60 minutes, simply closing the indoor space provided practical control effects against crawling pests and house dust mites. At the same time, the residual air concentration of the control ingredient was reduced to 2.0% or less 1 hour and 30 minutes after spraying, confirming that there was no risk of safety issues. In Examples 1 to 15, in which a crawling pest control compound was blended as a non-volatile control ingredient in the pest and mite control aerosol, the control effect extended to both crawling pests and house dust mites. However, in Examples 16 to 18, in which a mite control compound was blended as a non-volatile control ingredient, the control effect against crawling pests was not as high. Furthermore, as the organic solvent used to prepare the aerosol concentrate, lower alcohols with 2 to 3 carbon atoms, such as ethanol and isopropanol, were preferable to hydrocarbon solvents and ester solvents because they ensure uniform dispersion of spray particles and are less likely to leave sticky residue on the floor. Furthermore, a comparison of Examples 1 to 18 with Reference Example 1 revealed that the control effect against crawling pests and house dust mites can be further improved by closing the treatment space for 60 minutes or less, preferably 15 to 60 minutes, after spray treatment. However, although the extermination effect against cockroaches in Reference Example 1 was inferior to that of Examples 1 to 18, a sufficient cockroach repellent effect was observed.

[0070] According to the pest and mite control methods carried out in Examples 1 to 18, it was possible to ensure control effects while significantly shortening the 2 to 3 hour closing period required for conventional pest and mite control methods using fumigants or total-amount spray aerosols. Thus, the pest and mite control method of the present invention was also excellent in terms of user convenience.

[0071] In Comparative Example 1, in which the closing time after spraying was extended from 60 minutes to 70 minutes, the residual concentration of the control ingredient in the air was a very high value of 2.2%. Naturally, extending the closing time after spraying increases the control effect against pests and mites. However, since the aerosol for controlling pests and mites of the present invention is primarily intended for use in ordinary residences, it is thought that there are many situations in which people and pets remain indoors. In such situations, it is thought that people and pets may inhale the airborne control ingredient. Therefore, considering the health and safety of people and pets, the results of Comparative Example 1, in which the residual concentration of the control ingredient in the air is high, cannot be said to be desirable.

[0072] Although Reference Examples 1 to 7 showed reduced pest control efficacy compared to the Examples, they still demonstrated control efficacy against crawling pests and house dust mites. Reference Example 2 had a low content of the control ingredient in the aerosol concentrate, and Reference Example 4 had a low specific gravity of the aerosol concentrate, resulting in insufficient sedimentation and adhesion of the control ingredient to the floor surface. It is believed that this resulted in reduced control efficacy under the same spraying conditions as Examples 1 to 18. Reference Example 3, in which the content of the control ingredient in the aerosol concentrate was excessively high; Reference Example 5, in which the specific gravity of the aerosol concentrate was excessively high; Reference Example 6, in which the proportion of propellant filled in the aerosol container was excessively high; and Reference Example 7, in which the proportion of propellant filled in the aerosol container was excessively low, had poor dispersion uniformity of the spray particles, which is believed to be the cause of the reduced control efficacy.

[0073] Example 19 In Example 1, the ventilation rate when closing the room during the closing process was set to 0.2 to 0.4 times / hour. However, in a typical home, the ventilation rate when closing the room may be higher depending on the presence or absence of a ventilation vent and the structure of the room. Therefore, in Example 19, the ventilation rate when closing the room was changed to 0.6 to 0.8 times / hour, and the pest and mite control method of the present invention was carried out using the same procedures as in Example 1 under other conditions. As a result of remaining in the room, as in Example 1, no health discomfort was observed, and almost no sprayed sediment was observed, so no cleaning work was required after treatment. Over the next several days, as in Example 1, the spray exhibited practical control effects against crawling pests such as cockroaches, ants, and beetles, and also repelled house dust mites.

[0074] Example 20 At approximately 7:00 a.m. in the morning during the summer, in a 6-tatami mat living room of a wooden house, with the windows and doors closed, the aerosol of Example 1 was sprayed four times in the center of the room (approximately 1.5 m above the floor) at a slight upward angle. The windows and doors were kept closed for 30 minutes, and then the windows were slightly opened. After the spraying treatment, subjects remained in the room. As with Example 1, no health issues were noted, and almost no spray sediment was observed, so no cleaning work was required after treatment. On the day of use, mosquitoes were repelled from outside into the living room. Furthermore, over the following several days, no crawling pests such as cockroaches, ants, or beetles were observed, and house dust mites were repelled, demonstrating the effectiveness of the aerosol in practical pest control. [Industrial Applicability]

[0075] The method for controlling pests and mites and the aerosol for controlling pests and mites of the present invention can be used for the purpose of controlling a wide range of pests and mites indoors.

Claims

1. A method for controlling pests and mites using a fixed-amount spray type aerosol, The pest is a creeping pest, The mite is a house dust mite, A spraying step of spraying a fixed-amount spray type aerosol containing pest and mite control ingredients into a treatment space of a house to create an atmosphere for space treatment; a closing step of closing the treatment space in which the atmosphere for space treatment has been generated for 20 to 60 minutes with the windows and doors closed; It encompasses The pest and mite control component comprises at least one hardly volatile compound selected from the group consisting of fenothrin, permethrin, and cyphenothrin, The metered dose aerosol is prepared by filling an aerosol concentrate containing the pest and mite control ingredient and an organic solvent, and a propellant, into an aerosol container equipped with a metered dose valve; the volume ratio (a / b) of the aerosol concentrate (a) to the propellant (b) filled in the aerosol container is 20 / 80 to 50 / 50; The amount of the metered injection valve per injection is 0.2 to 1.0 mL; The injection force is 15 to 50 gf at a point 5 cm away from the injection port, In the spraying step, the volume of the treatment space is 18.8 to 33.3 m ３ A method for controlling pests and mites.

2. The content of the pest and mite control component in the aerosol concentrate is 30 to 75 w / v %, 2. The method for controlling insects and mites according to claim 1, wherein the specific gravity of the aerosol concentrate is 0.85 to 1.

15.

3. 3. The method for controlling insects and mites according to claim 1, wherein the organic solvent comprises at least one selected from the group consisting of isopropanol, hydrocarbon solvents, and higher fatty acid esters having 16 to 20 carbon atoms.

4. In the injection process, a closed 25m ３ When a fixed amount of the fixed-amount aerosol is sprayed into a treatment space, the air concentration of the hardly volatile compound in the treatment space immediately after spraying is defined as C1, In the closing step, after the treatment space is closed, the treatment space is maintained under natural ventilation conditions, and when the air concentration of the non-volatile compound in the treatment space after 1 hour and 30 minutes from the time of injection is C2, The following formula (1): R = C2 / C1 × 100...(1) 4. The method for controlling insects and mites according to claim 1, wherein the residual concentration in the air R defined as above is 0.04 to 2.0%.

5. 5. The method for controlling insects and mites according to claim 1, wherein in the closing step, the treatment space is closed so that the ventilation rate is 0.2 to 0.4 times / hour or 0.6 to 0.8 times / hour.

6. An aerosol for controlling pests and mites, which is obtained by filling an aerosol concentrate containing a pest and mite control ingredient and an organic solvent, and a propellant, into an aerosol container equipped with a metered injection valve, The pest is a creeping pest, The mite is a house dust mite, The pest and mite control component comprises at least one hardly volatile compound selected from the group consisting of fenothrin, permethrin, and cyphenothrin, the volume ratio (a / b) of the aerosol concentrate (a) to the propellant (b) filled in the aerosol container is 20 / 80 to 50 / 50; The amount of the metered injection valve per injection is 0.2 to 1.0 mL; The injection force is 15 to 50 gf at a point 5 cm away from the injection port, The aerosol container and / or the packaging material of the aerosol container have a label indicating that the treatment space should be closed with the windows and doors closed for 20 to 60 minutes after spraying the aerosol, The volume of the treatment space of the house to be sprayed is 18.8 to 33.3 m ３ This is an aerosol for controlling pests such as mites.

7. The content of the pest and mite control component in the aerosol concentrate is 30 to 75 w / v %, 7. The aerosol for controlling pests and mites according to claim 6, wherein the specific gravity of the aerosol concentrate is 0.85 to 1.

15.

8. The aerosol for controlling pests and mites according to claim 6 or 7, wherein the organic solvent comprises at least one selected from the group consisting of isopropanol, hydrocarbon solvents, and higher fatty acid esters having 16 to 20 carbon atoms.

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