JP6875215B2 - How to apply a cockroach repellent - Google Patents

Description

The present invention relates to a method for applying a cockroach repellent.

Among sanitary pests, cockroaches, which have strong vitality and fertility and carry pathogens that cause infectious diseases, are damp and narrow under and inside tableware and food storage shelves in kitchens and kitchens, or under refrigerators. It tends to prefer to live in dark places (narrow areas). As a method of repelling such cockroaches, there is a method of spraying a repellent agent such as an aerosol agent or a spray agent containing a repellent component on a narrow part such as under a refrigerator. For example, as described in Patent Document 1, it is used so as to adhere widely and evenly to a target spraying site. However, in places where food and drink are handled, there is a demand to avoid spraying and spreading the repellent over a wide area as much as possible.

On the other hand, in order to improve the repellent effect of cockroach, it is conceivable to increase the amount of the repellent used. However, considering that people, pets, food and drink, and tableware come into contact with repellents, there is a demand to avoid increasing the amount of repellents used as much as possible.

Japanese Unexamined Patent Publication No. 2002-167301

Therefore, the present invention provides a method capable of reliably repelling cockroaches without treating a wide range of repellents and without increasing the amount of the repellent used in repelling cockroaches from the intended site. The challenge is to provide.

As a result of diligent studies to solve the above problems, the present inventors have found a solution means having the following configuration, and have completed the present invention.
(1) A method for applying a cockroach repellent, which comprises spraying a cockroach repellent onto the cockroach habitat so that the coating area is 10% or less of the area of the cockroach habitat. ..
(2) The coating method according to (1) above, wherein the cockroach repellent contains at least one selected from the group consisting of pyrethroid compounds and essential oils as repellent components.
(3) The application method according to (1) or (2) above, wherein the cockroach repellent is an aerosol agent or a spray agent.
(4) A local spray product including a container containing a cockroach repellent and an injection member attached to the container and provided with a fixed-quantity spray valve for injecting a fixed amount of the cockroach repellent.

According to the coating method of the present invention, cockroach can be reliably repelled from the desired site without treating the repellent extensively and without increasing the amount of the repellent used. Therefore, it is suitable for use in a narrow part such as a cupboard where tableware is stored or under a sink.

It is explanatory drawing for demonstrating the test method performed in Examples 1-9 and Comparative Examples 1-6 in order to obtain the fixation inhibition rate. It is explanatory drawing which shows the state which the repellent is attached to the board made of vinyl chloride, FIG. 2 (A) shows the case where the aerosol agent is sprayed once, and FIG. 2 (B) shows the case where the aerosol agent is sprayed three times. FIG. 2C shows the case where the aerosol agent is sprayed 5 times. FIG. 3 (A) is an explanatory diagram for explaining the test method performed in Example 10 and Reference Example 7 in order to determine the colonization inhibition rate, and FIG. 3 (B) is shown in FIG. 3 (A). It is explanatory drawing which shows the shelter placed in the processing area and the untreatment area. It is explanatory drawing which shows the state which the repellent is attached to the board made of vinyl chloride, FIG. 4A shows the case where the aerosol agent was sprayed 9 times, and FIG. 4 (B) shows the case where the aerosol agent was sprayed 17 times. Shown.

In the method for applying the cockroach repellent according to the present invention, the cockroach repellent is locally applied to the cockroach habitat by spraying.

The repellent component contained in the cockroach repellent is not particularly limited as long as it is a component capable of repelling cockroach. Examples of such repellent components include transfluthrin, metoflutrin, allethrin, phthalthrin, resmethrin, phenothrin, permethrin, ciphenotrin, prarethrin, empentrin, imiprothrin and other pyrethroid compounds, methoxadiazone and other oxadiazole compounds, and hacka. Oils, essential oils such as sparemint oil, peppermint oil, DEET, ethyl 3- (N-butylacetamide) propionate, 1-methylpropyl-2- (2-hydroxyethyl) -1-piperidincarboxylate, p-menthan-3 , 8-diol, 1,6-hexanediol and the like. Among these, pyrethroid compounds and essential oils are preferable because they have an excellent repellent effect on cockroach. As the pyrethroid compound, transfluthrin, metoflutrin, phenothrin and permethrin are preferable.

The essential oil is preferably mint oil. Mentha oil is a component derived from natural products and is a component extracted from plants of the genus Mentha. The composition of such mint oil differs depending on the plant species used as a raw material. For example, menthol-containing menthol oil is extracted from peppermint, mentha canadensis and the like, and contains other components such as menthol and menthyl acetate.

The repellent component may be used as it is or diluted with a solvent. Examples of the solvent include monohydric alcohols such as ethanol and isopropyl alcohol, polyhydric alcohols such as 1,3-butylene glycol and glycerin, hydrocarbons such as normal paraffin and isoparaffin, and water. When the repellent component is diluted with a solvent, the dilution ratio may be appropriately set according to the desired amount of the repellent component sprayed.

Antifungal agents include fragrances, antioxidants, deodorants, pigments, chelating agents, surfactants, fixatives, pH adjusters, and bactericides, as needed, as long as they do not interfere with the effects of the present invention. , Additives such as antifungal agents may be included.

In the coating method according to the present invention, a cockroach repellent is applied by spraying. Examples of the method of applying by spraying include an aerosol form and a spray form. When the cockroach repellent is applied in the form of an aerosol, the aerosol can may be filled with the cockroach repellent and the propellant to prepare the aerosol. Examples of the propellant include liquefied petroleum gas, dimethyl ether, 1,3,3,3-tetrafluoropropene, nitrogen gas, carbon dioxide gas and the like. On the other hand, when the cockroach repellent is applied in the form of a spray, the cockroach repellent may be filled in a sprayer such as a hand pump (pressurized spray) to prepare the spray. In any spray form, the spraying member is preferably provided with a fixed-quantity spraying valve in that a fixed amount of cockroach repellent can be sprayed with a single spray.

When spraying in the form of an aerosol, the injection force at a distance of 5 cm from the spray hole is preferably 30 gf or less, more preferably 5 to 20 gf. The injection force can be adjusted by various factors such as the composition of the aerosol agent, the internal pressure of the aerosol agent, and the structure of the aerosol valve and the actuator. The injection force is measured by injecting the aerosol agent toward the center of a circular flat plate (diameter 60 mm) attached to a digital force gauge (model number: DS2-2N, manufactured by Imada Co., Ltd.) at room temperature of 25 ° C. (The distance between the spray hole and the flat plate is 5 cm), the maximum value at that time is used as the injection force, and the average value performed three times is adopted as the injection force.

In the coating method according to the present invention, the cockroach repellent is applied to the cockroach habitat. The cockroach habitat includes, for example, a humid, narrow and dark place, or a place that serves as a cockroach passage such as a front door, a closet floor, or a toilet floor. Moist, narrow and dark places include, for example, under the refrigerator (fridge covered with refrigerator), under the storage shelves for tableware and food (floor covered with storage shelves), and for tableware and food. Examples include shelves and under the sink. Coating method according to the present invention is not a large area, such as room, thus a ² about 5500cm with those applied in a relatively small area, preferably 50～4500Cm ^2, more preferably about 200～3500Cm ² The degree is suitable.

In the application method according to the present invention, the cockroach repellent is characterized in that it is locally applied to the cockroach habitat. As used herein, the term "topically applied" means that the cockroach repellent is not applied to the cockroach habitat so as to be widely dispersed, but is applied to the cockroach habitat in a spot manner.

The conventional repellent is treated so that the repellent component adheres to a wide range of the habitat where the cockroach inhabits, and the repellent component attached to the habitat prevents the invasion of the cockroach. That is, when the cockroach approaches the habitat, the tactile sensation, which is a sensory organ, touches the repellent component, and as a result, the cockroach acts to repel from that area. However, in this case, since the applied predetermined amount of the repellent component is adhered to a wide range, there are some places where the concentration of the repellent component is partially low, and the repellent effect varies.

On the other hand, in the coating method according to the present invention, the mechanism by which cockroach is repelled is presumed as follows. In the coating method according to the present invention, a predetermined amount of the repellent component is locally applied to the habitat area, so that the repellent component is present in the applied portion at an extremely high concentration. As a result, cockroaches approaching the habitat sense an abnormal concentration of repellent components and become confused, promptly repelling the area. That is, it is presumed that the coating method according to the present invention exerts a high repellent effect on cockroach by disturbing the behavior by contact with the repellent component adhering to a high concentration.

The area where the cockroach repellent is applied is not limited as long as it is local. In order to allow the repellent component to be present in a high concentration, the coating area is preferably 10% or less, more preferably about 2 to 9%, based on the area of the cockroach habitat.

The amount of cockroach repellent applied is not particularly limited. In the coating method according to the present invention, the repellent effect can be further improved without increasing the amount of the conventionally used repellent for cockroach. The coating amount is appropriately set according to the titer of the repellent component used, and the amount of the repellent component discharged by one spray is preferably 0.5 to 150 mg, more preferably 0.8 to 100 mg. As a repellent for cockroaches is prepared. When a pyrethroid compound such as transfluthrin or phenothrin is used as a repellent component, the amount of the repellent component discharged by one spray is preferably 0.5 to 30 mg, more preferably 0.8 to 20 mg. A repellent for cockroaches is prepared so that On the other hand, when an essential oil such as mint oil is used as a repellent component, the amount of the repellent component discharged in one spray is preferably 20 to 150 mg, more preferably 35 to 100 mg, and is a repellent for cockroaches. The agent is prepared. Essential oils have a lower titer than pyrethroid compounds, so the amount used is slightly higher.

Preferably respect inhabited areas 5～5500Cm ² cockroach is sprayed once, more preferably against 50～1500Cm ² sprayed once, more preferably sprayed once for 100~500cm ^2. The repellent component is preferably sprayed at 0.01 to 10 mg, more preferably 0.03 to 6 mg, based on a coating area of 1 cm ^{2 of the cockroach repellent.} When a pyrethroid compound is used as the repellent component, the pyrethroid compound is preferably sprayed at 0.01 to 1.5 mg, more preferably 0.03 to 1 mg, based on ^{a coating area of 1 cm 2 of the cockroach repellent.} When an essential oil is used as a repellent component, the essential oil is preferably sprayed at 0.5 to 10 mg, more preferably 0.7 to 6 mg, based on ^{a coating area of 1 cm 2 of the cockroach repellent.}

As described above, when the cockroach repellent is applied to the cockroach habitat by the application method according to the present invention, the desired site without treating the repellent extensively and without increasing the amount of the repellent used. Cockroach can be reliably repelled from. That is, as described above, it is presumed that the cockroach's repellent effect is further improved by utilizing the behavior peculiar to the cockroach. The cockroach that can be expected to have a repellent effect is not particularly limited, and examples thereof include Smokybrown cockroach, German cockroach, American cockroach, Japanese cockroach, and brown cockroach.

Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.

(Preparation Example 1: Preparation of aerosol agent containing transfluthrin)
As shown in Table 1, 12.5 g of transfluthrin was dissolved in isopropanol to prepare a 100 mL transfluthrin solution (12.5 w / v%). 2.5 mL of the obtained solution and 13.125 mL of liquefied petroleum gas as a propellant were placed in an aluminum can for aerosol (50 mL can), and a 0.2 mL metering valve and actuator were used as an actuator with a non-mechanical breakup structure (P94W W0668D " 3 ”, nozzle diameter 0.6 mm, manufactured by Mitani Valve Co., Ltd.) was attached to an aluminum can for aerosol to obtain a quantitative spray type aerosol agent. With this aerosol agent, 4 mg of transfluthrin is discharged in one spray.

(Preparation Example 2: Preparation of aerosol agent containing transfluthrin)
An aerosol agent was obtained in the same procedure as in Preparation Example 1 except that 2.5 g of transfluthrin was dissolved in isopropanol to prepare a 100 mL transfluthrin solution (2.5 w / v%). With this aerosol agent, 0.8 mg of transfluthrin is discharged in one spray.

(Preparation Example 3: Preparation of aerosol agent containing transfluthrin)
An aerosol agent was obtained in the same procedure as in Preparation Example 1 except that 0.5 g of transfluthrin was dissolved in isopropanol to prepare a 100 mL transfluthrin solution (0.5 w / v%). With this aerosol agent, 0.16 mg of transfluthrin is discharged in one spray.

(Preparation Example 4: Preparation of aerosol agent containing phenothrin)
An aerosol agent was obtained in the same procedure as in Preparation Example 1 except that 3.6 g of phenothrin was dissolved in isopropanol to prepare a 100 mL phenothrin solution (3.6 w / v%). With this aerosol agent, 1.15 mg of phenothrin is discharged in one spray.

(Preparation Example 5: Preparation of aerosol agent containing phenothrin)
An aerosol agent was obtained in the same procedure as in Preparation Example 1 except that 2.5 g of phenothrin was dissolved in isopropanol to prepare a 100 mL phenothrin solution (2.5 w / v%). With this aerosol agent, 0.8 mg of phenothrin is discharged in one spray.

(Preparation Example 6: Preparation of aerosol agent containing phenothrin)
An aerosol agent was obtained in the same procedure as in Preparation Example 1 except that 0.813 g of phenothrin was dissolved in isopropanol to prepare a 100 mL phenothrin solution (0.813 w / v%). With this aerosol agent, 0.26 mg of phenothrin is discharged in one spray.

(Preparation Example 7: Preparation of aerosol agent containing phenothrin)
An aerosol agent was obtained in the same procedure as in Preparation Example 1 except that 0.5 g of phenothrin was dissolved in isopropanol to prepare a 100 mL phenothrin solution (0.5 w / v%). With this aerosol agent, 0.16 mg of phenothrin is discharged in one spray.

(Preparation Example 8: Preparation of aerosol agent containing permethrin)
An aerosol agent was obtained in the same procedure as in Preparation Example 1 except that 2.5 g of permethrin was dissolved in isopropanol to prepare a 100 mL permethrin solution (2.5 w / v%). With this aerosol agent, 0.8 mg of permethrin is discharged in one spray.

(Preparation Example 9: Preparation of aerosol agent containing peppermint oil)
40 mL of mentha oil (specific gravity about 0.9) was dissolved in isopropanol to prepare 100 mL of mentha oil solution (40 v / v%). 6 mL of the obtained peppermint oil solution and 6 mL of liquefied petroleum gas as a propellant were placed in the aluminum can for aerosol used in Preparation Example 1, and the 0.2 mL metering valve and button were attached to the aluminum can for aerosol to add the aerosol agent. Obtained. With this aerosol agent, 36 mg of mint oil is discharged in one spray.

(Preparation Example 10: Preparation of aerosol agent containing peppermint oil)
An aerosol agent was obtained in the same procedure as in Preparation Example 9 except that 8 mL of mentha oil (specific gravity: about 0.9) was dissolved in isopropanol to prepare a 100 mL mentha oil solution (8 v / v%). With this aerosol agent, 7.2 mg of mint oil is discharged in one spray.

(Example 1)
As shown in FIG. 1, water and solid bait 2 were placed in a 100 cm × 100 cm × 20 cm vat 1. Calcium carbonate was applied to the inner wall surface of the bat 1 so that the cockroach would not escape.

Next, the aerosol agent obtained in Preparation Example 1 was sprayed once onto a substantially central portion of a 15 cm × 15 cm vinyl chloride plate 3 from a position 5 cm apart. The repellent 5 was attached to a vinyl chloride plate in a substantially circular shape (see FIG. 2 (A)), and the diameter after volatilization of isopropanol (solvent) was 2.9 cm (area 6.6 cm ² ). The area of the PVC plate 3 (225cm ^2), the area of the repellent 5 was about ^{2.9% ((6.6cm 2 / 225cm} 2) × 100). The amount of transfluthrin contained in the repellent 5 was 4 mg. In this way, a vinyl chloride plate (treatment group) 31 treated with the repellent 5 was obtained.

As shown in FIG. 1, two vinyl chloride plates (treatment plots) 31 treated with the repellent 5 were placed along the side surface of the bat 1 so as to face each other. On the other hand, two vinyl chloride plates (untreated plots) 32 on which the repellent 5 was not treated were also placed so as to face each other along a side surface different from that of the treated plots 31. A paper shelter 4 was placed on the treated area 31 and the untreated area 32.

Then, 40 adults of Smokybrown cockroach (20 males and 20 females) were released into the bat 1. After leaving the vat 1 overnight in a dark room at room temperature of 26 ± 2 ° C. and humidity of 65 ± 15% RH, the cockroaches present in each shelter 4 were counted. From the number of Smokybrown cockroaches existing in the treated group 31 and the untreated group 32, the colonization inhibition rate was calculated using the following formula. The results are shown in Table 2.
Fixation inhibition rate (%) = ((AB) / (A + B)) × 100
A: Total number of Smokybrown cockroaches that existed in the untreated area B: Total number of Smokybrown cockroaches that existed in the treated area

(Comparative Example 1)
The same procedure as in Example 1 except that the treatment group 31 obtained by injecting the aerosol agent obtained in Preparation Example 2 onto a 15 cm × 15 cm PVC plate 3 5 times from a position 5 cm apart was used. The test was conducted in 1 and the colonization inhibition rate was determined. The results are shown in Table 2. The repellent 5 is attached to the vinyl chloride plate 3 at five places (see FIG. 2C), and each repellent 5 is attached in a substantially circular shape, and the diameter after the solvent is volatilized is 2.9 cm. It was (area about 6.6 cm ² ). The area of the PVC plate 3 (225cm ^2), the area of the repellent 5 was about 14.7% in total ^{((33cm 2 / 225cm 2)} × 100). The amount of transfluthrin contained in the repellent 5 was 0.8 mg per site, for a total of 4 mg.

(Example 2)
The test was carried out in the same procedure as in Example 1 except that the aerosol agent obtained in Preparation Example 2 was used, and the fixation inhibition rate was determined. The results are shown in Table 2. The repellent 5 was attached to a vinyl chloride plate in a substantially circular shape (see FIG. 2 (A)), and the diameter after solvent volatilization was 2.9 cm (area: about 6.6 cm ² ). The area of the repellent 5 was about 2.9% with respect to the area of the vinyl chloride board 3. The amount of transfluthrin contained in the repellent 5 was 0.8 mg.

(Comparative Example 2)
The test was carried out in the same procedure as in Comparative Example 1 except that the aerosol agent obtained in Preparation Example 3 was used, and the fixation inhibition rate was determined. The results are shown in Table 2. The repellent 5 is attached to the vinyl chloride plate 3 at five places (see FIG. 2C). Each of the repellents 5 adhered in a substantially circular shape, and the diameter after the solvent volatilized was 2.9 cm (area of about 6.6 cm ² ). The total area of the repellent 5 was about 14.7% of the area of the vinyl chloride board 3. The amount of transfluthrin contained in the repellent 5 was 0.16 mg per site, and the total amount was 0.8 mg.

As is clear from Table 2, when Example 1 and Comparative Example 1 are compared, although the total amount of transfluthrin treated is the same, it is locally (10% or less) as compared with the case of extensive treatment. ) It can be seen that the treatment shows a higher fixation inhibition rate. It can be seen that the same results are shown by comparing Example 2 and Comparative Example 2. Comparing Example 2 and Comparative Example 1, it can be seen that Example 2 in which the total amount of transfluthrin treated is smaller shows a higher colonization inhibition rate than Comparative Example 1.

(Example 3)
The test was carried out in the same procedure as in Example 1 except that the aerosol agent obtained in Preparation Example 5 was used, and the fixation inhibition rate was determined. The results are shown in Table 3. The repellent 5 was attached to a vinyl chloride plate in a substantially circular shape (see FIG. 2 (A)), and the diameter after solvent volatilization was 2.9 cm (area: about 6.6 cm ² ). The area of the repellent 5 was about 2.9% with respect to the area of the vinyl chloride board 3. The amount of phenothrin contained in the repellent 5 was 0.8 mg.

(Example 4)
The test was carried out in the same procedure as in Example 1 except that the aerosol agent obtained in Preparation Example 6 was used, and the fixation inhibition rate was determined. The results are shown in Table 3. The repellent 5 is attached to the vinyl chloride plate 3 at three points (see FIG. 2B). Each of the repellents 5 adhered in a substantially circular shape, and the diameter after the solvent volatilized was 2.9 cm (area of about 6.6 cm ² ). The area of the repellent 5 was about 8.7% with respect to the area of the vinyl chloride board 3. The amount of phenothrin contained in the repellent 5 was 0.8 mg.

(Comparative Example 3)
The test was carried out in the same procedure as in Comparative Example 1 except that the aerosol agent obtained in Preparation Example 7 was used, and the fixation inhibition rate was determined. The results are shown in Table 3. The repellent 5 is attached to the vinyl chloride plate 3 at five places (see FIG. 2C). Each of the repellents 5 adhered in a substantially circular shape, and the diameter after the solvent volatilized was 2.9 cm (area of about 6.6 cm ² ). The total area of the repellent 5 was about 14.7% of the area of the vinyl chloride board 3. The amount of phenothrin contained in the repellent 5 was 0.16 mg per site, and the total amount was 0.8 mg.

(Comparative Example 4)
A filter paper cut into a circle (2.9 cm in diameter) was attached to a substantially central portion of the vinyl chloride plate 3. Then, the phenothrin solution obtained in Preparation Example 5 was added dropwise to the attached filter paper so as to have a phenothrin equivalent of 0.8 mg. Next, a test was conducted in the same procedure as in Example 1 to determine the colonization inhibition rate. The results are shown in Table 3. The area of the filter paper impregnated with phenothrin was about 2.9% with respect to the area of the PVC plate 3.

(Comparative Example 5)
A net made by lace-knitting a polyester multifilament was cut into a circle (2.9 cm in diameter) and attached to a substantially central portion of a vinyl chloride board 3. Next, the phenothrin solution obtained in Preparation Example 5 was added dropwise to the attached net so as to have a phenothrin equivalent of 0.8 mg. Next, a test was conducted in the same procedure as in Example 1 to determine the colonization inhibition rate. The results are shown in Table 3. The area of the net impregnated with phenothrin was about 2.9% with respect to the area of the PVC plate 3.

As is clear from Table 3, when Examples 3 and 4 are compared with Comparative Example 3, although the total amount of phenothrin treated is almost the same, it is locally (10%) as compared with the case of extensive treatment. It can be seen that the treatment (following) shows a higher fixation inhibition rate. Furthermore, it can be seen that when the repellent is not sprayed but impregnated with filter paper or a net and locally arranged (Comparative Examples 4 and 5), the fixation inhibition rate is low (the repellent effect is low). Since the filter paper and the net have a structure in which fibrous materials are entangled with each other, there are gaps between the fibers. Therefore, it is presumed that the impregnated repellent component permeates the voids between the fibers and cannot exist on the surface of the filter paper or the net at an extremely high concentration.

(Example 5)
The test was carried out in the same procedure as in Example 1 except that the aerosol agent obtained in Preparation Example 8 was used, and the fixation inhibition rate was determined. The results are shown in Table 4. The repellent 5 was attached to a vinyl chloride plate in a substantially circular shape (see FIG. 2 (A)), and the diameter after solvent volatilization was 2.9 cm (area: about 6.6 cm ² ). The area of the repellent 5 was about 2.9% with respect to the area of the vinyl chloride board 3. The amount of permethrin contained in the repellent 5 was 0.8 mg.

As is clear from Table 4, it can be seen that even when permethrin is used, a high colonization inhibition rate is exhibited when treated locally (10% or less).

(Example 6)
The test was carried out in the same procedure as in Example 1 except that the aerosol agent obtained in Preparation Example 9 was used, and the fixation inhibition rate was determined. The results are shown in Table 5. The repellent 5 was attached to a vinyl chloride plate in a substantially circular shape (see FIG. 2 (A)), and the diameter after solvent volatilization was 5.0 cm (area of about 19.6 cm ² ). The area of the repellent 5 was about 8.7% in total with respect to the area of the vinyl chloride board 3. The amount of mint oil contained in the repellent 5 was 36 mg.

(Comparative Example 6)
The test was carried out in the same procedure as in Comparative Example 1 except that the aerosol agent obtained in Preparation Example 10 was used, and the fixation inhibition rate was determined. The results are shown in Table 5. The repellent 5 is attached to the vinyl chloride plate 3 at five places (see FIG. 2C). Each repellent 5 was attached in a substantially circular shape, and the diameter after the solvent was volatilized was 4.5 cm (area: about 15.9 cm ² ). The area of the repellent 5 was about 35.3% in total with respect to the area of the vinyl chloride board 3. The amount of mint oil contained in the repellent 5 was 7.2 mg per site, for a total of 36 mg.

As is clear from Table 5, when Example 6 and Comparative Example 6 are compared, although the total amount of mint oil treated is the same, it is locally (10% or less) than when it is treated extensively. It can be seen that the treatment shows a higher colonization inhibition rate.

As described above, as is clear from Tables 2 to 5, if the amount of the repellent component is the same, the local treatment of the repellent has a better repellent effect on cockroach than the widespread treatment of the repellent. It turns out that it exerts.

(Example 7)
The aerosol agent actuator obtained in Preparation Example 5 was changed to an actuator having a mechanical break-up structure (D174W02331N "3" -A, injection port diameter 0.23 mm, manufactured by Mitani Valve Co., Ltd.) to adjust the injection force. Except for the above, the test was carried out in the same procedure as in Example 1 to determine the colonization inhibition rate. The measurement of the injection force is as described above, and the aerosol is directed toward the center of a circular flat plate (diameter 60 mm) mounted on a digital force gauge (model number: DS2-2N, manufactured by Imada Co., Ltd.) at room temperature of 25 ° C. This was done by spraying the agent (the distance between the spray hole and the flat plate was 5 cm). The injection force was 3.1 gf. The results are shown in Table 6.

(Example 8)
Except that the aerosol agent actuator obtained in Preparation Example 5 was changed to an actuator with a non-mechanical breakup structure (TW-200, nozzle diameter 1.0 mm, manufactured by Mitani Valve Co., Ltd.) to adjust the injection force. The test was carried out in the same procedure as in Example 1 to determine the colonization inhibition rate. The injection force was 6.2 gf. The results are shown in Table 6.

(Example 9)
The aerosol agent actuator obtained in Preparation Example 5 is changed to an actuator with a non-mechanical break-up structure (an actuator provided in "Pharmaceutical Goki Jet Pro Second Kill + Machibuse" manufactured by Earth Pharmaceutical Co., Ltd.) to inject force. The test was carried out in the same procedure as in Example 1 except that the above was adjusted, and the colonization inhibition rate was determined. The injection force was 18.6 gf. The results are shown in Table 6.

As is clear from Table 6, when the processing amount and the number of injections are the same, the stronger the injection force, the higher the fixation inhibition rate tends to be. It is presumed that the reason is that if the jetting force is weak, it is difficult for the drug to be jetted linearly, the drug spreads over a wide area, and it is difficult to treat locally.

(Example 10)
As shown in FIG. 3A, water and solid bait 12 were placed in a test area 11 partitioned by a side wall having a height of 20 cm and partitioned into a rectangular shape of 360 cm × 180 cm. Calcium carbonate was applied to the inner wall surface of the test area 11 so that the cockroach did not escape.

Next, the aerosol agent obtained in Preparation Example 4 was sprayed 9 times from a position 10 cm apart on a substantially central portion of a 50 cm × 60 cm vinyl chloride plate 13. The repellent 15 adhered to the vinyl chloride plate 13 in a substantially circular shape (see FIG. 4A), and the diameter after volatilization of isopropanol (solvent) was about 6 cm (area about 28 cm ² ). The area of the PVC plate 13 (3000cm ^2), the area of the repellent 15 was about ^{8.4% ((252cm 2 / 3000cm} 2) × 100). The amount of phenothrin contained in the repellent 15 was 10.4 mg (1.15 mg × 9). In this way, a vinyl chloride plate (treatment group) 131 treated with the repellent 15 was obtained.

As shown in FIG. 3A, a vinyl chloride plate (treated group) 131 treated with the repellent 15 and a vinyl chloride board (untreated group) not treated with the repellent 15 are contained in the test area 11. The 132 and the solid bait 12 were placed so as to face each other with the water and the solid bait 12 in between. As shown in FIG. 3B, four sheets of paper shelter 14 were placed on the treated area 131 and the untreated area 132.

Then, 40 adults of Smokybrown cockroach (20 males and 20 females) were released into the test area 11. After being left overnight at room temperature of 26 ± 2 ° C. and humidity of 65 ± 15% RH, the cockroaches present in the shelter 14 placed in the treated group 131 and the untreated group 132 were counted. From the number of Smokybrown cockroaches present in the treated group 131 and the untreated group 132, the colonization inhibition rate was determined in the same manner as in Example 1. The results are shown in Table 7.

(Reference example 7)
The aerosol agent obtained in Preparation Example 4 was sprayed 17 times from a position 10 cm apart on a substantially central portion of a 70 cm × 80 cm vinyl chloride plate 13. The repellent 15 adhered to the vinyl chloride plate 13 in a substantially circular shape (see FIG. 4B), and the diameter after volatilization of isopropanol (solvent) was about 6 cm (area about 28 cm ² ). The area of the PVC plate 13 (5600cm ^2), the area of the repellent 15 was about ^{8.5% ((476cm 2 / 5600cm} 2) × 100). The amount of phenothrin contained in the repellent 15 was 19.6 mg (1.15 mg × 17). In this way, a vinyl chloride plate (treatment group) 131 treated with the repellent 15 was obtained. The test was carried out in the same procedure as in Example 10 except that the treatment group 131 thus obtained was used, and the colonization inhibition rate was determined. The results are shown in Table 7.

As is clear from Table 7, when the treatment is performed locally (10% or less), the amount of the repellent component adhered per unit area is the same, and the test area is relatively small, a high fixation inhibition rate is shown. I understand.

1 Bat 2, 12 Water / solid bait 3, 13 PVC board 31, 131 Treatment area 32, 132 Untreatment area 4, 14 Paper shelter 5, 15 Repellent 11 Test area

Claims (4)

A method of applying a cockroach repellent, which is applied by spraying a cockroach repellent onto the cockroach habitat so that the coating area is 10% or less of the area of the cockroach habitat.
The area of the cockroach habitat is 50-5500 cm ² .
The cockroach repellent is applied in spots so that 0.01 to 10 mg of the repellent component is sprayed on an ^{application area of 1 cm 2 of the cockroach repellent.}
A method of applying a cockroach repellent. The coating method according to claim 1, wherein the cockroach repellent contains at least one selected from the group consisting of pyrethroid compounds and essential oils as repellent components. The coating method according to claim 1 or 2, wherein the cockroach repellent is an aerosol agent or a spray agent. A topical spray product for use in the coating method according to any one of claims 1 to 3.
A container containing a cockroach repellent and
An injection member mounted on a container and equipped with a fixed amount spray valve for injecting a fixed amount of cockroach repellent.
Topical spray products including.

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