Methods for controlling pests and mites, and aerosols for controlling pests and mites

Abstract

This invention provides a simple method for controlling pests and mites using a metered-dose aerosol spray. [Solution] A method for controlling pests and mites using a quantitative spray type aerosol, comprising: a spraying step of spraying a quantitative spray type aerosol containing a pest and mite control component into a treatment space to generate an atmosphere for space treatment; and a closing step of closing the treatment space where the atmosphere for space treatment has been generated within 60 minutes.

Description

[Technical Field]

[0001] This invention relates to a method for controlling pests and mites using a quantitative spray type aerosol, and to an aerosol for controlling pests and mites. [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 where these insects live or travel 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 release the insecticide to every corner of a room in one go, and the room is sealed for a predetermined time (usually about 2-3 hours) to increase the concentration of the insecticide, during which time people cannot enter the room, thus falling under the category of pharmaceuticals. These formulations are characterized by their so-called spatial treatment, which provides a high extermination effect against crawling insects and indoor dust mites throughout the entire treated space due to the released insecticide. However, most of the insecticides used are generally easily decomposed by light after remaining on floors, etc., and also have a weak extermination effect on cockroach eggs, for example, so it is considered effective to repeat the application 2-4 weeks later when any eggs that were not exterminated hatch. Thus, while these formulations have the advantage of only needing to be applied once every 2-4 weeks, they require effort such as protecting electrical appliances and tableware before treatment and cleaning up the sprayed residue after treatment, and special attention must be paid to the safety of the insecticide, so they cannot be said to be formulations that are 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, they are not spatial treatments and only exert an extermination effect on crawling insects and indoor dust mites at the treated area. As a result, they are so-called local treatments, and therefore the contact efficiency between the pesticide and the insects or 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 for crawling insects and indoor dust mites that falls under the category of quasi-drugs, diligently studied to develop a formulation that would provide sufficient control for practical use when sprayed using a metered-dose aerosol, rather than formulations used once every 2 to 4 weeks such as (1) fumigants or (2) full-volume spray aerosols, and that would be highly safe and usable even in situations where people are present. As a result, they invented an extremely useful "method for controlling insects 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 project] [Problems that the invention aims to solve]

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

[0009] This invention has been made in view of the above-mentioned problems, and aims to provide a simple method for controlling pests and mites that can be carried out using a quantitative spray type aerosol, and an aerosol for controlling pests and mites. [Means for solving the problem]

[0010] The characteristic configuration of the pest and mite control method according to the present invention, which solves the above problems, is as follows: A method for controlling pests and mites using a quantitative spray type aerosol, A spraying process involves spraying a quantitative-spray type aerosol containing pest and mite control components into the treatment space to create an atmosphere for space treatment, A closing process to close off the processing space where the atmosphere for spatial processing has been generated within 60 minutes, The purpose is to include it.

[0011] This pest and mite control method utilizes a quantitative spray type aerosol for spatial treatment, allowing for safe pest and mite control even in the presence of people. In spatial treatment, a quantitative spray type aerosol containing pest and mite control components is sprayed into the treatment space. After the treatment atmosphere is created, the space is closed within 60 minutes to improve control effectiveness against crawling insects and indoor dust mites. Compared to conventional pest and mite control methods, this spatial treatment method reduces the frequency of application of the formulation while ensuring control effectiveness and safety.

[0012] In the pest and mite control method according to the present invention, In the closing step, it is preferable that the closing time is 15 minutes or more.

[0013] According to the pest and mite control method of this configuration, in the closing step, by setting the closing time to 15 minutes or more, the closing time of the treatment space in which the atmosphere for space treatment is generated becomes 15 to 60 minutes. Therefore, considering the convenience of the user, a high control effect is achieved against crawling pests and indoor dust mites, and the application frequency of the preparation can be reduced.

[0014] In the pest and mite control method according to the present invention, In the closing step, it is preferable that the closing time is 20 to 40 minutes.

[0015] According to the pest and mite control method of this configuration, since the closing time of the treatment space in which the atmosphere for space treatment is generated becomes 20 to 40 minutes, a reliable control effect is achieved against crawling pests and indoor dust mites, and the application frequency of the preparation can be reduced.

[0016] In the pest and mite control method according to the present invention, The quantitative injection type aerosol is filled in an aerosol container provided with a quantitative injection valve with an aerosol stock solution containing the pest and mite control component and an organic solvent and an injection agent, The pest and mite control component contains a hardly volatile compound having a vapor pressure of less than 1 × 10 -4 mmHg at 30 °C, The content of the pest and mite control component in the aerosol stock solution is 30 to 75 w / v%, The specific gravity of the aerosol stock solution is 0.85 to 1.15, The volume ratio (a / b) of the aerosol stock solution (a) filled in the aerosol container to the injection agent (b) is preferably 10 / 90 to 50 / 50.

[0017] The inventors believe that in order to improve the control effect against crawling insects, particularly cockroaches, in spatial treatment, when forming the sprayed particles after spraying into floating particles that float in the treated space and adhesive particles that adhere to exposed parts in the treated space, it is effective to make the adhesive particles dominant, and furthermore, to increase the ratio of adhesive particles that are involved in settling to the floor surface rather than adhering to walls etc., and the control component has a vapor pressure of 1 × 10 at 30°C. -4 We found that when using non-volatile compounds with a concentration of less than mmHg, the concentration of the control component in the aerosol concentrate and the specific gravity of the aerosol concentrate are important factors that determine the behavior of adhesive particles involved in sedimentation. With this pest and mite control method, if the content of the control component in the aerosol concentrate and the specific gravity of the aerosol concentrate are within the appropriate range described above, adhesive particles become dominant in the sprayed particles after spraying, thereby improving the control effect against crawling insects, especially cockroaches.

[0018] In the pest and mite control method according to the present invention, The aforementioned pest and mite control component has a vapor pressure of 2 × 10 at 30°C. -4 ~1 × 10 -2 Preferably, the compound further contains a volatile pyrethroid compound with a concentration of mmHg.

[0019] According to this pest and mite control method, the pest and mite control component has a vapor pressure of 2 × 10 at 30°C. -4 ~1 × 10 -2 By further including a volatile pyrethroid compound in mmHg, in addition to the control effect against crawling insects and indoor dust mites by the non-volatile compound, it is also possible to achieve excellent control effects against flying insects by the volatile pyrethroid compound.

[0020] In the pest and mite control method 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 this pest and mite control method, the inclusion of a lower alcohol with 2-3 carbon atoms and / or a higher fatty acid ester with 16-20 carbon atoms in the organic solvent improves the uniformity of the spray particle diffusion, resulting in a superior control effect against crawling insects and indoor dust mites through spatial treatment.

[0022] In the pest and mite control method according to the present invention, The injection volume per cycle of the aforementioned quantitative injection valve is preferably 0.2 to 5.0 mL.

[0023] According to this pest and mite control method, since the spray volume per spray of the quantitative spray valve is within the above range, spraying the aerosol concentrate once to several times ensures that the amount of pest and mite control component is released appropriately, making the spraying process easy to carry out.

[0024] In the pest and mite control method according to the present invention, In the aforementioned injection process, the closed 25m 3 When a fixed amount of the quantitative spray type aerosol is sprayed into the processing space, the airborne concentration of the non-volatile compound in the processing space immediately after spraying is defined as C1. In the closing step, after closing the processing space, the processing space is maintained under natural ventilation conditions, and the airborne concentration of the non-volatile compound in the processing space 1 hour and 30 minutes after injection is defined as C2. The following equation (1): R = C2 / C1 × 100 ···(1) The residual concentration rate R in the air, as defined by [the formula], is preferably 0.04 to 2.0%.

[0025] According to this pest and mite control method, the airborne concentration retention rate R defined by formula (1) above is 0.04 to 2.0%, which is sufficient to be expected to control pests and mites, and there are no safety concerns for humans or pets in the treated space after application.

[0026] The characteristic configuration of the aerosol for pest and mite control according to the present invention, which solves the above problems, is as follows: An aerosol for controlling pests and mites, comprising an aerosol concentrate containing pest and mite control components and an organic solvent, and a propellant, filled into an aerosol container equipped with a metered-dose spray valve, The aerosol container and / or the packaging material of the aerosol container have a label indicating that the processing space should be closed after the aerosol is sprayed.

[0027] With this aerosol for pest and mite control, by indicating on the aerosol container and / or packaging 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 instructions, thereby improving the control effect against crawling insects and indoor dust mites. Thus, with this aerosol for pest and mite control, safe pest and mite control can be performed even in the presence of people, 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 aforementioned indication of closure is an indication of closure for n minutes, where n is preferably a number less than or equal to 60 or a range of consecutive numbers.

[0029] With this configuration of aerosol for pest and mite control, the aerosol container and / or the packaging of the aerosol container will have a label indicating that the treated space should be sealed within 60 minutes after spraying the aerosol. By following this label and sealing the treated space, the user can improve the control effect against crawling insects and indoor dust mites while considering the user's convenience. Compared to conventional pest and mite control products, this type of aerosol for pest and mite control, which uses space treatment, can reduce the frequency of application of the formulation while ensuring control effectiveness and safety.

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

[0031] With this type of aerosol for pest and mite control, the aerosol container and / or packaging material will have instructions to seal the treated area for 15 to 60 minutes after spraying the aerosol. By following these instructions and sealing the treated area, the user can reliably control crawling insects and indoor dust mites. Compared to conventional pest and mite control products, this type of aerosol for pest and mite control, which uses space treatment, can reduce the frequency of application while ensuring control effectiveness and safety. [Modes for carrying out the invention]

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

[0033] [Aerosol for pest and mite control] The aerosol for pest and mite control of the present invention is a metered-dose spray type aerosol used to control crawling insects and indoor dust mites by spatial treatment. It consists of an aerosol concentrate containing pest and mite control components and an organic solvent, as well as a propellant, filled into an aerosol container equipped with a metered-dose spray valve. In the following description, the "pest and mite control components" will be simply referred to as the "control components." The aerosol container and / or the packaging of the aerosol container display instructions for use to help or encourage the user to use the aerosol for pest and mite control of the present invention in accordance with the spatial treatment intended by the present invention, including instructions to close the treatment space for a specific time or time range. For example, instructions such as "Close the room when you first start using it," "Close windows and doors when you first start using it," "After spraying the aerosol, close the treatment space for 30 minutes," and "After spraying the aerosol, close the treatment space for 15 to 60 minutes" are displayed. In this invention, "space treatment" refers to a treatment that widely disperses the control component into the treatment space to control crawling insects and indoor dust mites throughout the entire treatment space. Compared to localized treatment, which involves localized surface or spot treatment with the control component to control crawling insects and indoor dust mites only in the treated areas, space treatment offers superior contact efficiency of the control component with crawling insects and indoor dust mites, thus providing a high control effect. However, safety for people in the treatment space must be considered. Therefore, the insect and mite control aerosol of this invention uses a control component that is highly safe even in the presence of people, and employs a method of use in which the treatment space is closed after spraying the aerosol, according to the markings on the aerosol container and / or the packaging of the aerosol container. The closure time of the treatment space should be within 60 minutes, preferably 15 to 60 minutes, and more preferably 20 to 40 minutes. Here, "closing off" the "processing space" ideally means completely isolating it from the outside. However, in actual houses and other buildings, air exchange between inside and outside can occur through attics, ventilation openings, etc. Therefore, the meaning of closing off the processing space should be judged based on the common sense of ordinary consumers, who are the main users of aerosols for pest and mite control.Specifically, when the treatment space is the living room of a residence, if the ventilation fan is stopped and the windows and doors of the living room are closed, the treatment space can be determined to be closed. Note that the cautionary note such as "After spraying the aerosol, close the treatment space for 30 minutes." intends to ensure that the closing time of the treatment space after spraying the aerosol is 30 minutes. Therefore, if the closing time of the treatment space after aerosol spraying is ensured for 30 minutes, the closing operation of the treatment space may be performed before, simultaneously with, or after the aerosol spraying. Regarding the closed state and the ventilation rate in ordinary houses, according to the "Investigation Research Report: Investigation for Measuring the Concentration of Indoor Use Insecticides in the Air - Fundamental Research for the Behavior and Risk Assessment of Indoor Use Insecticides -" (2004), even when the windows and doors are completely closed, the ventilation rate is not zero, and it is reported to be 0.06 - 0.81 times / hour (by the method for measuring the ventilation rate of a living room using carbon dioxide gas). The aerosol for pest and mite control of the present invention can form an atmosphere for space treatment in the treatment space only by performing such a simple operation, and thus it can be expected to have a practically sufficient control effect on crawling pests and indoor dust mites. In this specification, in addition to the control effect based on the knockdown effect and the lethal effect, the repellent effect is also referred to as the control effect. Even if the control effect is low, if there is a sufficient repellent effect, in many practical cases, control can be achieved.

[0034] < aerosol stock solution > As a control component, which is one of the main components of the aerosol stock solution, there are poorly volatile compounds with a vapor pressure of less than 1×10 -4 mmHg at 30°C, volatile compounds with a vapor pressure of 2×10 -4 ~1×10 -2 mmHg at 30°C, etc.

[0035] In the aerosol for pest and mite control of the present invention, as a control component, there is a vapor pressure of 1×10 -4It is preferable to include a non-volatile compound with a volatility of less than mmHg. Examples of non-volatile compounds include compounds for controlling crawling insects, such as cockroaches, and / or compounds for controlling mites, mainly indoor dust mites. Examples of compounds for controlling crawling insects include pyrethroid compounds such as phenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropatrin, 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, phenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox, and dinotefuran are preferred. Furthermore, if optical or geometric isomers based on chiral carbon exist in the acidic or alcoholic portion of pyrethroid compounds, each of these or any mixture thereof is also included in the compounds for controlling creeping insects. Examples of compounds for controlling mites include amidoflumeth, 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-propynylbutylcarbamate, phenothrin, 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, phenothrin, and DEET are preferred. When a certain amount of the aerosol for controlling pests and mites of the present invention is sprayed in an indoor treatment space, the sprayed particles mainly settle on the floor surface as adhesive particles, but because it contains the above-mentioned non-volatile compounds as control components, it shows excellent control effects, especially against crawling insects and indoor dust mites, in the treatment space.Furthermore, by including the above-mentioned non-volatile compound as a control component, the volatilization of the control component into the air from adhesive particles that settle on the floor surface 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 non-volatile compound, the control component has a vapor pressure of 2 × 10 at 30°C. -4 ~1 × 10 -2 The present invention may further contain a volatile pyrethroid compound with a vapor pressure of mmHg. Examples of volatile pyrethroid compounds include metofluthrin, profluthrin, transfluthrin, empenthrin, terrarethrin, and flamethrin. Among these, metofluthrin, profluthrin, and transfluthrin are preferred considering vapor pressure, stability, and basic insecticidal efficacy. If optical isomers or geometric isomers based on chiral carbon exist in the acidic or alcoholic portions of these compounds, each of them or any mixture thereof is 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, some of the sprayed particles remain suspended in the air, but by containing the above-mentioned volatile pyrethroid compound as a control component, it can also exert a control effect against flying insects. Furthermore, when volatile pyrethroid compounds adhere to some floor or wall surfaces together with non-volatile compounds, they can synergistically enhance the control effect against crawling insects and / or indoor dust mites.

[0037] The content of the pest control component in the aerosol concentrate is 8-80 w / v%, preferably 30-75 w / v%. When the content of the pest control component in the aerosol concentrate is within the above range, the pest control component dissolves easily in the organic solvent, and when the aerosol is sprayed, the sprayed 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 closure time of the treatment space should be within 60 minutes, preferably 15-60 minutes, and more preferably 20-40 minutes.

[0038] The aerosol concentrate contains an organic solvent in addition to the above-mentioned pest control components. The organic solvent used can dissolve the above-mentioned pest control components to prepare the aerosol concentrate, and can also form optimal spray particles when the prepared aerosol concentrate is sprayed. In the aerosol for pest and mite control of the present invention, examples of organic solvents include lower alcohols with 2 to 3 carbon atoms such as ethanol and isopropanol (IPA), hydrocarbon solvents such as n-paraffin and isoparaffin, higher fatty acid esters with 16 to 20 carbon atoms such as isopropyl myristate (IPM) and hexyl laurate, glycol ether solvents with 3 to 10 carbon atoms, and ketone solvents. Among these, lower alcohols with 2 to 3 carbon atoms and higher fatty acid esters with 16 to 20 carbon atoms are preferred. In particular, lower alcohols with 2 to 3 carbon atoms are more preferred because they allow for uniform diffusion of spray particles and do not easily cause stickiness on the floor surface.

[0039] After spraying, the sprayed particles are formed as floating particles that remain suspended in the treatment space, or as adhesive particles that adhere to exposed areas within the treatment space. The inventors of the present invention conducted studies to make adhesive particles even more dominant, and further, to increase the proportion of adhesive particles that settle on the floor rather than adhering to walls, etc. They found that the specific gravity of the aerosol concentrate, along with the content of the pest control component in the aerosol concentrate, is an important factor in determining the behavior of the adhesive particles that settle. The specific gravity of the aerosol concentrate is preferably 0.85 to 1.15, and more preferably 0.89 to 1.10, with a specific gravity of 0.78 to 1.20. If the specific gravity of the aerosol concentrate is within the above range, when a certain amount of the pest and mite control aerosol of the present invention is sprayed in an indoor treatment space, the sprayed particles will mainly settle on the floor as adhesive particles. Therefore, by closing the treatment space after spraying the aerosol, an appropriate pest control effect can be obtained. The closure time of the treatment space should be within 60 minutes, preferably 15 to 60 minutes, and more preferably 20 to 40 minutes. Furthermore, if the specific gravity of the aerosol concentrate is within the above range, the adhesive particles will enter gaps and hidden areas during the process of settling, so if a pyrethroid compound is used as the control component, a flushing effect that causes cockroaches and other insects to fly out of gaps and hidden areas can be sufficiently 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, defoamers, and excipients targeting 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 orthophenylphenol. In addition, 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 green leaf alcohol and green leaf aldehyde, which are known as "green scents."

[0041] The aerosol for controlling pests and mites of the present invention is sprayed in small amounts, so there is no need to pay particular attention to the risk of fire. However, from the viewpoint of reducing the risk of fire as much as possible, a water-based formulation can be adopted. In this case, the amount of water contained in the aerosol concentrate is preferably about 10 to 50 v / v%, and a small amount of nonionic surfactant may be added as a solubilizing aid, within a range that 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 styrene phenol, and polyalkarolamides of fatty acids, among which ethers are preferred.

[0042] <propellant> Examples of propellants used in the pest and mite control aerosol of the present invention include liquefied petroleum gas (LPG), dimethyl ether (DME), and hydrofluoroolefins, as well as nitrogen gas, carbon dioxide, nitrous oxide, and compressed air. The above propellants can be used individually or in mixtures, but those with LPG as the main component are easier to use.

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

[0044] The aerosol for controlling pests and mites of the present invention preferably has a spray volume of 0.2 to 5.0 mL per spray of the metered spray valve. If the spray volume is within the above range, for example, it can cover a volume of 18.8 to 33.3 m³, which corresponds to a room of 4.5 to 8 tatami mats. 3 (Area 7.5~13.3m 2 In a treatment space (2.2-3.0 m in height), spraying the aerosol for pest and mite control once to several times ensures an appropriate release of the control component, providing a practically sufficient control effect against crawling insects and / or indoor dust mites in the treatment space.

[0045] The aerosol for controlling pests and mites of the present invention preferably has a spray force of 5 to 50 gf at a distance of 5 cm from the nozzle. When the spray force is within the above range, the majority of the control component quickly settles and adheres to the entire floor surface of the indoor treatment space, and a practically sufficient control effect against crawling insects and mites can be obtained. If the spray force is less than 5 gf, the spray force is insufficient and the diffusion to the entire floor surface tends to be inadequate, while if the spray force exceeds 50 gf, good diffusion may not be obtained. Such a 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 aerosol for pest and mite control of the present invention can be appropriately selected in terms of the shape of the nozzle, container, etc., according to its application and intended use. For example, it can be designed as a tabletop type with a button that sprays when pressed from above and a nozzle that is angled upwards, or as a portable type in a small container.

[0047] [Pest and mite control methods] The present invention provides a method for controlling pests and mites, comprising a spraying step of spraying a quantitative spray-type aerosol containing a control component, such as the pest and mite control aerosol of the present invention, into a treatment space to generate an atmosphere for space treatment, and a closing step of closing the treatment space where the atmosphere for space treatment has been generated for a certain period of time. In the closing step, the treatment space is closed. The closing time of the treatment space shall be within 60 minutes, preferably 15 to 60 minutes, and more preferably 20 to 40 minutes. In the closing step, it is preferable to close the treatment space continuously for the specified time, but in cases where the space is temporarily opened, for example, for a user to leave the treatment space, it is also possible to close the treatment space discontinuously so that the total closing time equals the specified time, as long as the temporary opening is for a short period of time that does not impair the effects of the present invention.

[0048] When using fumigants or full-volume spray aerosols, it is necessary to keep the treatment space closed for 2-3 hours during the treatment, and to protect electrical appliances and tableware before treatment, as well as to clean up any sprayed residue after treatment. In contrast, the pest and mite control method of the present invention uses a metered-volume spray aerosol, which allows for a small amount of control component to be sprayed into the treatment space during the spraying process. Therefore, the pest and mite control method of the present invention eliminates the need for pre-treatment preparation procedures and post-treatment cleaning of sprayed residue that are required with fumigants and full-volume spray aerosols. Furthermore, since the pest and mite control method of the present invention uses a metered-volume spray aerosol to treat the space, pest and mite control can be safely carried out without leaving the indoor space that serves as the treatment area. Therefore, the pest and mite control method of the present invention employs a spatial treatment method that is superior in control effect to localized treatment methods, while also offering convenience that cannot be expected from conventional spatial treatments using fumigants or full-volume spray aerosols, making its practicality immeasurable.

[0049] During the spraying process, the amount of non-volatile compounds used as pest control components released into the air is 0.1 to 50 mg / m³. 3 Preferably, the concentration is 0.5 to 50 mg / m². 3 It is more preferable that this is the case. If the amount of the non-volatile compound released into the air is within the above range, it is possible to obtain excellent control effects against crawling insects and indoor dust mites while maintaining high safety even in situations where people are present. Using an aerosol for pest and mite control equipped with a metered spray valve with a spray volume of 0.2 to 5.0 mL per spray, the volume equivalent to a room of 4.5 to 8 tatami mats is 18.8 to 33.3 m³. 3 (Area 7.5~13.3m 2 When the spraying process is carried out in an indoor treatment space (2.2-3.0 m in height), typically, a single spray releases 0.1-50 mg / m³ of the pest control component into the air. 3 In larger indoor treatment spaces, the amount of pest control component released into the air should be 0.1 to 50 mg / m³, depending on the volume of the treatment space. 3By spraying multiple times, a similar pest control effect can be obtained regardless of the size of the treatment area. Even when using an aerosol equipped with a metered spray valve with a single spray volume of 0.2-0.9 mL, the amount of pest control component released into the air is 0.1-50 mg / m³. 3 By adjusting the number of sprays as needed, excellent control effects against crawling insects and indoor dust mites can be obtained.

[0050] In the pest and mite control method of the present invention, during the spraying process, a closed 25m 3 When an aerosol for pest and mite control is sprayed into a treatment space, the airborne concentration of the control component measured in the treatment space immediately after spraying is defined as C1. After the closure process is carried out, the treatment space is maintained under natural ventilation conditions, and the airborne concentration of the control component 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) The airborne concentration retention rate R, as defined above, is preferably 0.04 to 2.0%. Here, "under natural ventilation conditions" refers to situations such as slightly opening a window or opening a door to enter and exit, meaning an air exchange rate of 0.8 to 1.0 times / hour. The airborne concentration retention rate R is an indicator of the control effect and safety as defined in this invention. If the airborne concentration retention rate R is within the above range, sufficient pest and mite control effects can be expected, and it is assumed that there will be no safety concerns for people or pets in the treated space after application. The amount of control component released into the air during the spraying process is 0.1 to 50 mg / m³. 3In this case, the closing time of the processing space in the closing process is set to 60 minutes or less, preferably 15 to 60 minutes, more preferably 20 to 40 minutes, and by adjusting the spraying conditions in the spraying process, the airborne concentration retention rate R can be set to 0.04 to 2.0%. The measurement of the airborne concentration of the pest control component is to follow the "Guidelines for Measuring Indoor Air Concentration of Insecticides as Over-the-Counter Drugs and Quasi-Drugs" issued by the Ministry of Health, Labour and Welfare, and in these guidelines, the ventilation conditions during measurement are set to 0.5 times / hour as an average condition, in relation to the aforementioned "Research Report: Survey for Comparison of Airborne Concentration Measurement of Indoor Insecticides - Basic Research for Behavior and Risk Assessment of Indoor Insecticides -" (2004). In the test conditions of the present invention, a more severe ventilation rate of 0.2 to 0.4 times / hour was set as the ventilation rate in the closed state from a safety standpoint, and the optimal closing time in the closing process was identified by verifying the spraying performance and effectiveness, etc. After the closure process was completed, the room was returned to natural ventilation conditions 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, which generally result in an air exchange rate of approximately 0.8 to 2.0 times / hour, although the test to measure the residual concentration rate R in the air was conducted at an air exchange rate of 0.8 to 1.0 times / hour), and thereafter, the room was kept open with an air exchange rate of 2 times or more / hour. The air exchange rate was measured using the method for measuring the air exchange rate in a living room using carbon dioxide, as described in the aforementioned "Research Report: Survey for Comparison of Air Concentration Measurement of Indoor Insecticides - Basic Research for Behavior and Risk Assessment of Indoor Insecticides -" (2004).

[0051] The pest and mite control method of the present invention can be adjusted as appropriate depending on the usage conditions, but it is preferable to perform it 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 insects and indoor dust mites can be improved by performing a closure step after the spraying step, so even with a frequency of once every 1 to 5 days, a practically sufficient control effect against crawling insects and indoor dust mites can be expected. Furthermore, compared to conventional spatial treatment methods, the application frequency is reduced, making it highly convenient. It is also possible to perform the spraying step after the closure operation, as long as the closure time of the treated space after aerosol spraying is secured for a predetermined time or longer. It is also possible to perform the spraying step and the closure operation simultaneously. Thus, the pest and mite control method of the present invention has a simple treatment procedure and can reduce the frequency of application of pest and mite control aerosols. Furthermore, by using volatile pyrethroid compounds in combination with the pest and mite control aerosol, it is possible to impart a control effect against flying insects.

[0052] The present invention's method for controlling pests and mites is effective against cockroaches such as German cockroaches, American cockroaches, and Oriental cockroaches; bed bugs such as bed bugs and Taiwanese bed bugs; stink bugs such as brown marmorated stink bugs; ants such as black garden ants, reticulated ants, brown ants, house ants, red imported fire ants, and red imported fire ants; spiders such as huntsman spiders, spotted house spiders, and redback spiders; millipedes; centipedes such as giant centipedes; pill bugs; sowbugs; termites such as Formosan subterranean termites and Japanese subterranean termites; caterpillars; and clothes moths. It is also effective in controlling creeping insects such as clothes moths, carpet beetles such as the common carpet beetle and the small carpet beetle, confused flour beetle, rice weevil, cigarette beetle, booklice, pill bugs, and sowbugs, as well as indoor dust mites such as flour mites, long-haired flour mites, house dust mites, dust mites, predatory mites, and black house dust mites, as well as mosquitoes such as Culex pipiens, Aedes albopictus, Aedes aegypti, and Culex pipiens, flies such as houseflies and flesh flies, gnats, drain flies, midges, wasps, and moths. In particular, it is effective in controlling cockroaches such as the German cockroach, American cockroach, and Oriental cockroach; bed bugs such as the bed bug and Taiwanese bed bug; ants such as the black garden ant, reticulated ant, brown ant, house ant, red imported fire ant, and red imported fire ant; crawling insects such as the confused flour beetle, rice weevil, cigarette beetle, booklice, pill bugs, and sowbugs; and indoor dust mites such as flour mites, long-haired flour mites, house dust mites, dust mites, predatory mites, and black house dust mites. [Examples]

[0053] Examples 1-20, in which the treatment space closure time was 60 minutes or less, and Comparative Example 1, in which the treatment space closure time was 70 minutes, were compared to further examine the pest and mite control method of the present invention. For reference, similar examinations were also conducted for a shorter treatment space closure time of 10 minutes (Reference Example 1), and for cases where the treatment space closure time was 60 minutes or less, similar to Examples 1-19, but the composition, specific gravity, or ratio of aerosol concentrate to propellant deviated from the examples (Reference Examples 2-7).

[0054] [Example 1] An aerosol concentrate was prepared by dissolving phenothrin (53 w / v%), a non-volatile compound used as a pest control agent, and metofluthrin (0.7 w / v%), a volatile pyrethroid compound used as a pest control agent, 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 and filled into an aerosol container with a metered-dose spray valve (aerosol container) with a spray capacity of 1.0 mL, such that the volume ratio (a / b) was 40 / 60 by volume, to obtain an aerosol for pest and mite control. The spray force of this aerosol at a spray distance of 5 cm was 28 gf. The aerosol container and the shrink film covering it were marked with a product label (caution for use) stating, "Keep the indoor space closed for 30 minutes after spraying a certain amount."

[0055] Volume 25m 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2 Without protecting items such as televisions and cupboards placed in the room, the room was closed off, and an aerosol for pest and mite control was sprayed slightly upward at an angle in the center of the room (1.5m above the floor) to treat the space. After this spraying treatment, the room was closed for 30 minutes (ventilation rate: 0.2-0.4 times / hour) to implement the pest and mite control method of the present invention. After that, the room was left in a normal residential natural ventilation state (ventilation rate: 0.8-1.0 times / hour) for 1 hour and 30 minutes from the time of spraying, and then exposed to the chemical in an open state for 24 hours from the time of spraying. The occupants remained in the room throughout this period but experienced no health problems whatsoever, and since almost no spray sediment was observed, no cleaning work was required after the treatment. For several days thereafter, the aerosol demonstrated practical control effects against crawling insects such as cockroaches, ants, and cigarette beetles, and also repelled indoor dust mites.

[0056] Furthermore, when the phenothrin airborne concentration (C1) immediately after spraying in this treatment and the phenothrin airborne concentration (C2) one hour later (1 hour and 30 minutes after spraying) were measured after closing the room for 30 minutes and then returning to a state of natural ventilation, the residual airborne concentration rate calculated by the aforementioned formula (1) was 0.6%. In other words, according to the pest and mite control method of the present invention, by simply closing the room for 30 minutes, almost all of the control component settles and adheres to the entire floor surface, exhibiting a control effect for several days, and moreover, the residual airborne concentration rate of the control component is 0.6%, confirming that there is almost no risk of safety problems arising from inhaling the airborne control component. In addition, although the phenomenon of cockroaches flushing out was observed after the spraying treatment, it was found that a sealing time of 15 minutes or more is preferable to prevent the cockroaches from escaping from the room.

[0057] [Examples 2-18] Aerosols for controlling various pests and mites were prepared using the formulations shown in Table 1, following the procedure in accordance with Example 1, and the pest and mite control method of the present invention was carried out for the closing times shown in Table 1.

[0058] [Comparative Example 1] Comparative Example 1 involved closing the treatment space for 70 minutes, which is longer than 60 minutes. Following the same procedure as in Example 1, an aerosol for pest and mite control was prepared with the formulation shown in Table 2, and a pest and mite control method outside the scope of the present invention was implemented.

[0059] [Reference examples 1 to 7] Aerosols for controlling various pests and mites were prepared using the formulations shown in Table 2, following the procedure in accordance with Example 1, and the pest and mite control method of the present invention was carried out for the closing times shown in Table 2.

[0060] [Table 1]

[0061] [Table 2]

[0062] After implementing the pest and mite control methods described in Examples 1-18, Comparative Example 1, and Reference Examples 1-7, the following tests were conducted. For indoor dust mites, the eradication effect was first examined, and if the eradication effect was insufficient, the repellent effect was evaluated. The test results are shown in Table 3.

[0063] (1) Extermination effect against creeping insects A total of 12 glass plates measuring 20 x 20 cm (4 each for German cockroaches, American cockroaches, and black garden ants) enclosed in a 25 m³ enclosure. 3 The room (area 10m²) 2 The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on top of each glass plate. The specified test insects (5 female adult German cockroaches, 5 nymphs of the American cockroach, and 5 black garden ants) were released into each ring and allowed to roam freely. A fixed amount of the test aerosol was sprayed in the center of the room (1.5 m above the floor) at a slightly upward angle. Immediately after spraying, the room was closed for the time shown in Tables 1 and 2 (ventilation rate: 0.2 to 0.4 times / hour), and then left under natural ventilation conditions typical of a residential building (ventilation rate: 0.8 to 1.0 times / hour) for 1 hour and 30 minutes from the time of spraying. Furthermore, the room was exposed to the chemical in an open state for 24 hours from the time of spraying. The glass plates, along with the rings containing the test insects, were moved to another room, fed, and the mortality rate of the test insects was determined after another 24 hours.

[0064] (2) Extermination effect against indoor dust mites Eight petri dishes, each 9 cm in diameter and 6 cm high (four for house dust mites and four for long-haired dust mites), enclosed in a 25 m³ volume. 3 The room (area 10m²) 2 The test was conducted by placing approximately 200 test mites in each of the four corners of the room, in waist-high petri dishes. A fixed amount of the test aerosol was sprayed from the center of the room (1.5m above the floor) at a slightly upward angle. Immediately after spraying, the room was closed for the time shown in Tables 1 and 2 (ventilation rate: 0.2-0.4 times / hour), then left under natural ventilation conditions typical of a residential building (ventilation rate: 0.8-1.0 times / hour) for 1 hour and 30 minutes from the time of spraying, and then exposed to the chemical in an open state for 24 hours from the time of spraying. The number of dead test mites was counted, and the mortality rate (%) was calculated.

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

[0066] (4) Uniformity of diffusion of control components A sealed volume of 25 m³ 3 The room (area 10m²) 2 Six to eight 20 x 20 cm glass plates were placed on the floor of the room, and a fixed amount of the test aerosol was sprayed from the center of the room (1.5 m above the floor) at a slightly upward angle. Immediately after spraying, the room was closed for the time shown in Tables 1 and 2 (ventilation rate: 0.2 to 0.4 times / hour), and then left for 1 hour under natural ventilation conditions typical of a residential building (ventilation rate: 0.8 to 1.0 times / hour). After that, all the glass plates were removed, and the adhering control components were washed off with acetone and analyzed by gas chromatography. The variation in the adhering control components between each glass plate was analyzed to evaluate the diffusion uniformity of the sprayed particles. The results are shown in four stages, from best to worst diffusion uniformity: ◎, ○, △, ×.

[0067] (5) Percentage of airborne concentration of pest control components A sealed volume of 25 m³ 3 The room (area 10m²) 2 A fixed amount of the test aerosol was sprayed slightly upward at an angle in the center of the room (1.5 m above the floor). An air collection tube (a glass tube filled with silica gel and both ends packed with cotton wool) was placed 50 cm behind the center of the room (130 cm from the wall) and 120 cm above the floor. Immediately after spraying, it was connected to a vacuum pump and a predetermined amount of air was drawn in. The air collection tube was washed with acetone, and the amount of the collected pest control component was analyzed by gas chromatography (Shimadzu Corporation, model GC1700). Based on the obtained analytical values, the airborne concentration (C1) (mg / m³) of the pest control component immediately after spraying was calculated. 3 The following was determined: Immediately after spraying, 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 performed after 1 hour and 30 minutes under natural ventilation conditions in a typical house (ventilation rate: 0.8 to 1.0 times / hour). The airborne concentration (C2) (mg / m³) at this point was determined. 3 ) was calculated. Then, from C1 and C2, the airborne concentration remaining percentage (%) was calculated using the aforementioned formula (1).

[0068] [Table 3]

[0069] The test results showed that in Examples 1-18, after spraying a certain amount, the spray particles diffused almost uniformly across the entire floor surface, and simply closing the indoor space for 60 minutes provided a practical control effect against crawling insects and indoor dust mites. Furthermore, the airborne concentration retention rate of the control component was reduced to 2.0% or less from immediately after spraying to 1 hour and 30 minutes later, confirming that there was no risk of safety issues. In Examples 1-15, where a crawling insect control compound was incorporated as a low-volatility control component in the aerosol for insect and mite control, the control effect extended to both crawling insects and indoor dust mites. However, in Examples 16-18, where a mite control compound was incorporated as a low-volatility control component, the control effect against crawling insects was not as high. Furthermore, as organic solvents used in preparing the aerosol concentrate, lower alcohols with 2 to 3 carbon atoms, such as ethanol and isopropanol, were preferred over hydrocarbon solvents and ester solvents due to their uniform diffusion of spray particles and their ability to avoid stickiness on the floor surface. In addition, a comparison of Examples 1 to 18 with Reference Example 1 revealed that the control effect against crawling insects and indoor dust mites could be further improved by closing the treatment space for 60 minutes or less, preferably 15 to 60 minutes, after the spray treatment. However, even in Reference Example 1, although the extermination effect against cockroaches was inferior to that of Examples 1 to 18, a sufficient repellent effect against cockroaches was observed.

[0070] The pest and mite control methods implemented in Examples 1 to 18 significantly reduced the 2-3 hour closure process required in conventional pest and mite control methods using fumigants or full-volume spray aerosols while still ensuring effective control. Thus, the pest and mite control method of the present invention also offered excellent convenience for the user.

[0071] In Comparative Example 1, where the closure time after spraying was extended to 70 minutes (longer than 60 minutes), the airborne concentration retention rate of the pest control component was a very high 2.2%. While extending the closure time after spraying naturally increases the pest and mite control effect, the pest and mite control aerosol of the present invention is primarily intended for use in general residences, and it is likely that people and pets will be present in the rooms in many situations. In such situations, there is a risk that people and pets may inhale the airborne pest control component. Therefore, considering the health and safety of people and pets, the result of Comparative Example 1, which shows a high airborne concentration retention rate of the pest control component, is not desirable.

[0072] Reference Examples 1-7 showed reduced pest control efficacy compared to the Examples, but demonstrated control efficacy against crawling insects and indoor dust mites. In Reference Example 2, the content of the control component in the aerosol concentrate was low, and in Reference Example 4, the specific gravity of the aerosol concentrate was low, resulting in insufficient settling and adhesion of the control component to the floor surface. Under the same spraying conditions as Examples 1-18, this likely led to reduced control efficacy. In Reference Example 3, where the content of the control component in the aerosol concentrate was excessively high; in Reference Example 5, where the specific gravity of the aerosol concentrate was excessively high; in Reference Example 6, where the proportion of propellant in the aerosol container was excessively high; and in Reference Example 7, where the proportion of propellant in the aerosol container was excessively low, the low diffusion uniformity of the spray particles is considered 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 general residences, the ventilation rate when closing the room may be higher depending on the presence or absence of ventilation openings 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 under the same procedure as in Example 1 under the same conditions. As a result of remaining in the room, there were no health problems whatsoever, similar to Example 1, and since almost no sprayed sediment was observed, no cleaning work was required after treatment. For several days thereafter, similar to Example 1, it exhibited a practical control effect against crawling insects such as cockroaches, ants, and cigarette beetles, and also repelled indoor dust mites.

[0074] [Example 20] In the early morning of summer, around 7:00 AM, in a 6-tatami mat living room of a wooden house, with the windows and doors already closed, the aerosol from Example 1 was sprayed four times in the center of the room (approximately 1.5m above the floor) at a slightly upward angle. After keeping the windows and doors closed for 30 minutes, the windows were slightly opened. As a result of remaining in the room after the spraying, there were no health problems whatsoever, similar to Example 1, and since almost no spray residue was observed, no cleaning work was required after the treatment. On the day of use, mosquitoes were not attracted to the living room from outside. Furthermore, for several days afterward, no crawling pests such as cockroaches, ants, or cigarette beetles were observed, and indoor dust mites were not attracted, indicating that it exhibits a practical control effect. [Industrial applicability]

[0075] The pest and mite control method and pest and mite control aerosol 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 quantitative spray type aerosol, The aforementioned pest is a creeping insect, The aforementioned mites are house dust mites, A spraying process involves spraying a quantitative-spray type aerosol containing pest and mite control components into the treatment space of a house to create an atmosphere for space treatment, A closing process involves closing the processing space, where an atmosphere for spatial processing has been generated, with windows and doors closed for 20 to 60 minutes. It includes, The aforementioned pest and mite control component has a vapor pressure of 1 × 10 at 30°C. －４ It consists of a non-volatile compound with a concentration of less than mmHg. The aforementioned metered-dispense type aerosol is prepared by filling an aerosol container equipped with a metered-dispense valve with an aerosol concentrate containing the insect and mite control components and an organic solvent, and a propellant. The injection volume per cycle of the aforementioned quantitative injection valve is 0.2 to 1.0 mL. At a distance of 5 cm from the nozzle, the injection force is 15 to 50 gf. In the injection process, the volume of the processing space is 18.8 to 33.3 m³. ３ And, In the aforementioned spraying process, the amount of the pest and mite control component released into the air is 0.1 to 50 mg / m². ３ Methods for controlling pests and mites.

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

15.

3. The method for controlling pests and mites according to claim 1 or 2, 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 aforementioned injection process, the closed 25m ３ When a fixed amount of the quantitative spray type aerosol is sprayed into the processing space, the airborne concentration of the non-volatile compound in the processing space immediately after spraying is defined as C1. In the closing process, after closing the processing space, the processing space is maintained under natural ventilation conditions, and the airborne concentration of the non-volatile compound in the processing space 1 hour and 30 minutes after injection is defined as C2. The following equation (1): R = C2 / C1 × 100...(1) A method for controlling pests and mites according to any one of claims 1 to 3, wherein the airborne concentration retention rate R, as defined by [the relevant definition], is 0.04 to 2.0%.

5. A method for controlling pests and mites according to any one of claims 1 to 4, wherein in the closing step, the processing 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, comprising an aerosol concentrate containing pest and mite control components and an organic solvent, and a propellant, filled into an aerosol container equipped with a metered-dose spray valve, The aforementioned pest is a creeping insect, The aforementioned mites are house dust mites, The aforementioned pest and mite control component has a vapor pressure of 1 × 10 at 30°C. －４ It consists of a non-volatile compound with a concentration of less than mmHg. The injection volume per cycle of the aforementioned quantitative injection valve is 0.2 to 1.0 mL. At a distance of 5 cm from the nozzle, the injection force is 15 to 50 gf. The aerosol container and / or the packaging of the aerosol container have a label indicating that after spraying the aerosol, the processing space should be closed off for 20 to 60 minutes with windows and doors closed. The volume of the treatment space in the house to be sprayed is 18.8 to 33.3 m³. ３ And, The amount of the aforementioned pest and mite control components released into the air is 0.1 to 50 mg / m². ３ Aerosol spray designed for pest and mite control.

7. The content of the insect and mite control component in the aerosol concentrate is 30-75 w / v%, 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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