JP2021153597A - Cockroach extermination aerosol product, and cockroach extermination method - Google Patents

Abstract

To facilitate an extermination treatment usable safely to anywhere in a room, having high versatility, and not requiring a large scale device.SOLUTION: A weight ratio of an insecticidal active ingredient and a solvent stored in an aerosol container 10 to a propellant is set to be within a range of 8:92 to 30:70. The aerosol container 10 is a quantitative jet type in which only a prescribed amount of the insecticidal active ingredient and the solvent is injected by one time operation of an operation button 20. A vapor pressure of the solvent is set to be lower than ethanol.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cockroach extermination aerosol product for exterminating cockroach and other cockroach pests and a cockroach extermination method, and particularly to a technical field related to an aerosol effective against cockroach lurking in a gap in a room. Belongs.

For example, cockroaches hide in narrow gaps in the room and may nest or breed on the back or bottom of furniture, electrical appliances, etc. As a device for exterminating cockroaches lurking in such a narrow space, for example, a sanitary pest repellent device disclosed in Patent Document 1 is known. In Patent Document 1, a drug diffusion pedestal is provided at the bottom of furniture, electrical appliances, etc., a space for diffusing the repellent drug is formed inside the drug diffusion pedestal, and an injection nozzle is provided in the space inside the drug diffusion pedestal. The repellent drug is sprayed by. An aerosol container containing a repellent is connected to the injection nozzle by a connecting tube so that the repellent in the aerosol container is injected from the injection nozzle into the space inside the drug diffusion pedestal via the connecting tube. It has become.

Japanese Unexamined Patent Publication No. 2003-164248

However, since the drug diffusion pedestal portion of the device of Patent Document 1 is provided at the lower part of furniture, electric appliances, etc., the repellent drug does not reach the back surface of the furniture, for example. Therefore, in the case of the device of Patent Document 1, it is considered that the cockroach lurking in the back surface of the furniture has almost no effect.

Further, since the drug diffusion pedestal portion can be provided only when the furniture or the like is actually installed, it is difficult to provide the device of Patent Document 1 after the furniture or the like is installed. Further, it is necessary to manufacture the drug diffusion pedestal portion according to the shape and size of the furniture, and there is also a problem that the versatility is low.

Further, the device of Patent Document 1 requires an injection nozzle corresponding to the size of the drug diffusion pedestal portion, a connecting tube for connecting the aerosol container and the injection nozzle, and the like, in addition to the drug diffusion pedestal portion. This makes it a large-scale device.

Further, when the repellent agent is sprayed into a closed space such as a room, it is preferable to reduce the amount of the repellent agent to be sprayed at one time to a specified amount or less from the viewpoint of safety.

The present invention has been made in view of the above points, and an object of the present invention is that it can be safely used anywhere in a room, has high versatility, and eliminates the need for a large-scale device. The purpose is to facilitate the extermination process.

In order to achieve the above object, in the present invention, the ratio of the propellant contained in the aerosol container is increased, the vapor pressure of the solvent for dissolving the insecticidal active ingredient is lowered, and the particles ejected from the aerosol container are formed. By slowing down the evaporation rate of the solvent, the particles were allowed to fly over a wide area.

The first invention is
An insecticidal active ingredient that exterminates cockroaches,
With the solvent in which the above insecticidal active ingredient dissolves,
The insecticidal active ingredient, the propellant for injecting the solvent, and
In an aerosol product for cockroach extermination provided with the above-mentioned insecticidal active ingredient, the above-mentioned solvent, and the above-mentioned aerosol container containing the propellant.
The vapor pressure of the solvent at 25 ° C. is 7.0 kPa or less.
The weight ratio of the propellant contained in the aerosol container to the liquid other than the propellant is set to be in the range of 8:92 to 30:70 when the liquid: propellant is used. ,
The aerosol container has a nozzle portion, and the insecticidal active ingredient and the solvent are applied from the nozzle portion to the gap between the indoor wall and furniture or the gap between the indoor wall and electric appliances by one operation of the injection button. It is characterized by being a fixed-quantity injection type that injects only a predetermined amount.

According to this configuration, the weight ratio of the liquid to the propellant is in the range of 8:92 to 30:70, so that the propellant is rich in formulation. As a result, when a liquid containing an insecticidal active ingredient and a solvent is ejected from an aerosol container, it tends to become small particles, the momentum of the particles becomes stronger, and the ejected particles fly over a wide range and are in the air. It becomes easy to drift to. Further, since the vapor pressure of the solvent at 25 ° C. is 7.0 kPa or less, which is sufficiently low, the evaporation rate of the solvent forming the injected particles becomes slow, and the particles fly far away. At the same time, the time of floating in the air becomes longer. Therefore, for example, assuming that the particles are sprayed between the wall and the furniture, the particles containing the insecticidal active ingredient fly to the back along the side surface of the furniture, and then wrap around to the back side of the furniture and follow the back surface. It flies and floats in the air, and then falls to near the bottom of the furniture due to its own weight. In this way, since the particles fly over a wide range even in a narrow gap, the effect of the insecticidal active ingredient is exhibited in a wide range without providing a large-scale device.

In addition, since the aerosol container is a fixed-quantity injection type, even if the particles fly over a wide area as described above, the amount of the insecticidal active ingredient will not be injected more than the specified amount, which will improve safety and handle. It will be easier. Further, since the place of use is not limited to under furniture or the like as in the conventional case, versatility is enhanced.

The second invention is the first invention.
The insecticidal active ingredient is characterized by being at least one of cyphenothrin, cyfluthrin and tralomethrin.

According to this configuration, high efficacy against crawling pests can be obtained even if the amount of the insecticidal active ingredient is small.

The third invention is the first or second invention.
The amount of the insecticidal active ingredient injected by one operation of the injection button is set to 3 mg or more and 20 mg or less.

According to this configuration, 3 mg or more of the insecticidal active ingredient is injected by one injection operation, so that even when the particles fly over a wide area, the insecticidal active ingredient contained in each particle is sufficiently secured. High efficacy is obtained. On the other hand, since the amount of the insecticidal active ingredient injected by one injection operation is 20 mg or less, high safety is ensured when used in a closed room, for example.

The fourth invention is the invention of any one of the first to the third.
The solvent is characterized by being at least one of isopropyl myristate and a saturated hydrocarbon solvent.

That is, ethanol (vapor pressure at 25 ° C. of 7.91 kPa) is a commonly used solvent, but by using isopropyl myristate and a saturated hydrocarbon solvent, the vapor pressure of the solvent is lower than that of ethanol. Become. As a result, the evaporation rate of the solvent forming the ejected particles becomes even slower, and the time during which the particles are floating in the air becomes longer.

The fifth invention is the invention of any one of the first to the fourth.
The injection amount of the liquid other than the injection agent by one operation of the injection button is set to 0.1 ml or more and 0.4 ml or less.

The sixth invention is an insecticidal active ingredient that exterminates cockroaches.
A solvent in which the above-mentioned insecticidal active ingredient is dissolved and a vapor pressure at 25 ° C. of 7.0 kPa or less, which is lower than that of ethanol,
The insecticidal active ingredient and the propellant for injecting the solvent are housed in a quantitative injection type aerosol container that injects the insecticidal active ingredient and the solvent in a predetermined amount by one operation of the injection button, and the injection is performed. The weight ratio of the agent to the liquid other than the propellant is set to be in the range of 8:92 to 30:70 when the liquid: propellant is used.
This is a method for exterminating crawling pests in which a predetermined amount of the insecticidal active ingredient and the solvent are sprayed upward from the nozzle portion of the aerosol container into the gap between the indoor wall and furniture or the gap between the indoor wall and electric appliances.

According to the first and sixth inventions, the ratio of the aerosol propellant was increased, and the vapor pressure of the solvent for dissolving the insecticidal active ingredient was lowered to slow down the evaporation rate of the solvent forming the jetted particles. Therefore, the particles can be blown over a wide range, and the effect of the insecticidal active ingredient can be exerted over a wide range without providing a large-scale device. In addition, since the aerosol container is a fixed-quantity injection type, the amount of the insecticidal active ingredient is not injected more than the specified amount. Therefore, it can be safely used anywhere in the room, has high versatility, and can facilitate the extermination process without the need for a large-scale device.

According to the second invention, since the insecticidal active ingredient is at least one of cyphenothrin, cyfluthrin and tralomethrin, high efficacy against crawling pests can be obtained even if the amount of the insecticidal active ingredient is small, and one injection button can be obtained. It is possible to reduce the injection amount by the operation of.

According to the third invention, since the injection amount of the insecticidal active ingredient by one operation of the injection button is 3 mg or more and 20 mg or less, high safety can be ensured while obtaining high efficacy by the insecticidal active ingredient.

According to the fourth invention, since the solvent is at least one of isopropyl myristate and a saturated hydrocarbon solvent, the time that the particles ejected from the aerosol container are floating in the air can be further extended, and the insecticide can be killed. The efficacy of the active ingredient is further enhanced.

According to the fifth invention, it can be safely used anywhere in the room, has high versatility, and can facilitate the extermination process without the need for a large-scale device.

It is a perspective view of the aerosol product for crawling pest control. It is the schematic explaining the test environment in a test room.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

FIG. 1 is a perspective view of an aerosol product 1 for exterminating crawling pests according to an embodiment of the present invention. The aerosol product 1 for exterminating crawling pests includes an aerosol container 10, a push-down operation button (injection button) 20, a tubular base 30 attached to the aerosol container 10, and a tubular cover 40 attached to the tubular base 30. It has. Then, by rotating the operation button 20 and the cylindrical cover 40, it is possible to switch between a pressable state in which the operation button 20 can be pressed down and a non-pressable state in which the operation button 20 cannot be pressed down. It is configured.

In the description of this embodiment, when the user holds and uses it by hand, the left side and the right side when viewed from the user are simply referred to as "left" and "right", respectively, and are the front side when viewed from the user. The side is simply called "rear", and the side that is the back side when viewed from the user is simply called "front".

The peripheral wall portion of the aerosol container 10 has translucency, so that the remaining amount of the contents can be grasped from the outside. A fixed-quantity injection valve mechanism (not shown) is provided on the upper part of the aerosol container 10. This valve mechanism is an urging member including a discharge pipe (not shown) for moving in the vertical direction and discharging the contents contained in the aerosol container 10 and a spring or the like for urging the discharge pipe upward. It has a valve body (not shown) and a valve body (not shown). The discharge pipe is in a posture of extending in the vertical direction, and when it is in the rising end position, the lower end portion (upstream end portion) of the discharge pipe is closed by the valve body so that the inside of the aerosol container 10 and the discharge pipe do not communicate with each other. On the other hand, when the discharge pipe is pushed downward from the rising end position, the lower end of the discharge pipe is opened, the inside of the aerosol container 10 and the discharge pipe communicate with each other, and the contents are discharged from the upper end of the discharge pipe. The above valve mechanism is configured so as to be used. Further, when the discharge pipe is pushed once, the lower end of the discharge pipe is momentarily opened and then closed, and a small amount (predetermined amount) of the contents is injected. That is, the aerosol container 10 is a fixed-quantity injection type. As the quantitative injection type aerosol container 10, for example, the container described in Japanese Patent Application Laid-Open No. 2014-28631 can be used.

The operation button 20 can be obtained, for example, by injection molding a resin material, and the entire operation button 20 is integrally molded. The operation button 20 is fitted on the upper side of the discharge pipe of the aerosol container 10 to push the discharge pipe, and has a button main body 21 and a nozzle portion 23. The nozzle portion 23 projects from the front portion of the button body 21.

The nozzle portion 23 projects toward the front side in a direction intersecting the center line of the discharge pipe, and is inclined so as to be located upward toward the front side. The base end side of the nozzle portion 23 communicates with the discharge pipe 13 of the aerosol container 10. The inclination angle of the nozzle portion 23 can be set, for example, in a range in which the angle formed by the plane perpendicular to the center line of the discharge pipe is 5 degrees or more and 45 degrees or less. By inclining the nozzle portion 23, the contents can be effectively discharged obliquely upward.

The tubular base 30 extends in the vertical direction and is formed in a cylindrical shape having an outer diameter substantially the same as the outer diameter of the intermediate portion in the vertical direction of the aerosol container 10. The lower end of the tubular base 30 is entirely open, and the upper portion of the aerosol container 10 is inserted and fixed from the lower end of the tubular base 30.

The tubular cover 40 is formed so as to surround the circumference of the operation button 20, and is attached to the cylindrical base 30. That is, the lower side of the tubular cover 40 is fitted to the upper side of the tubular base 30. In this state, the outer peripheral surface of the button body 21 of the operation button 20 is covered with the cylindrical cover 40. Further, the nozzle portion 23 of the operation button 20 projects forward from the notch portion 41 provided in the front portion of the tubular cover 40.

The contents contained in the aerosol container 10 are an insecticidal active ingredient for exterminating pests, a solvent in which the insecticidal active ingredient is dissolved, and an insecticidal active ingredient and a propellant for injecting the solvent. The contents may contain an insecticidal active ingredient, a solvent, a chemical other than a propellant, and the like. For example, a repellent for crawling pests, a fragrance, a fungicide, a disinfectant and the like can be mixed with the contents. The type of repellent for crawling pests is not particularly limited, but any agent that has the effect of repelling crawling pests may be used.

The insecticidal active ingredient is an ingredient that exerts an insecticidal effect on crawling pests, and various agents used as insecticides can be used. In this embodiment, synthetic pyrethroids can be used, specifically at least one of cyphenothrin, cyfluthrin and tralomethrin, which may be mixed and used. By using at least one of cyphenothrin, cyfluthrin and tralomethrin, sufficient efficacy can be obtained even if the injection amount of the insecticidal active ingredient is small as compared with the case of using, for example, imiprothrin, phthalthrin and resmethrin.

The solvent is preferably one in which the above-mentioned insecticidal active ingredient is dissolved and whose vapor pressure is lower than that of ethanol. The vapor pressure of the solvent is preferably 7.0 kPa or less at 25 ° C., more preferably 4.5 kPa or less at 25 ° C., and even more preferably 1.9 kPa or less. Further, a solvent having a vapor pressure of 0.7 kPa or less at 25 ° C. is most preferable. As such a solvent, for example, at least one of isopropyl myristate and a saturated hydrocarbon solvent can be used, and these may be mixed and used.

Examples of the solvent include propanol (vapor pressure at 25 ° C.: 4.41 kPa), water (3.2630 kPa), octane (1.8874 kPa), nonane (6.177 × 10 ² Pa), and dodecane (same as above). 1.80 × 10 Pa), tridecane (the 7.5 Pa), there may be mentioned isopropyl myristate (1.247 × 10 ^-2 Pa), etc., is not limited thereto, contained in the steam pressure range Various solvents can be used. One type of solvent may be used alone, or a plurality of types may be mixed and used.

When the vapor pressure of the solvent at 25 ° C. exceeds 7.0 kPa, the evaporation rate of the solvent forming the injected particles becomes high, the mass of each particle decreases early, and the particles fly. As the distance gets shorter, the time spent in the air gets shorter. This means a decrease in efficacy. On the other hand, when the vapor pressure of the solvent at 25 ° C. is 7.0 kPa or less, the vapor pressure is sufficiently low, so that the evaporation rate of the solvent forming the injected particles becomes slow, and this causes the particles to become. As it flies farther, it spends more time floating in the air. In particular, when the vapor pressure at 25 ° C. is 1.9 kPa or less, the flight distance of the particles is remarkably long, and the time of floating in the air is also remarkably long, which is preferable.

As the propellant, liquefied petroleum gas (LPG), dimethyl ether (DME), or the like can be used, and these may be mixed and used.

As described above, the aerosol container 10 contains the propellant and a liquid other than the propellant. The weight ratio of the propellant to the liquid other than the propellant is set to be in the range of 8:92 to 30:70 when the liquid: propellant is used, and this aerosol for exterminating crawling pests. Product 1 has a formulation rich in propellant. As a result, when the liquid containing the insecticidal active ingredient and the solvent is ejected from the aerosol container 10, it tends to become small particles, the momentum of the particles becomes strong, and the ejected particles fly over a wide range. It becomes easy to float in the air.

That is, when the amount of the propellant is smaller than the ratio of the weight ratio of the liquid: propellant to 30:70, the particles become large when the liquid containing the insecticidal active ingredient and the solvent is jetted from the aerosol container 10. As a result, the weight of each particle becomes heavy, it becomes difficult to float in the air, and the particle falls before it flies over a wide area. Further, the fact that the propellant is less than the ratio of the liquid: propellant weight ratio of 30:70 means that the amount of the liquid is larger, but the amount of the liquid is the weight. If it is larger than the ratio, the amount of the liquid injected at one time becomes too large, and this also increases the weight per particle and makes it difficult to float in the air. On the other hand, if the amount of the propellant is larger than the ratio of the liquid: propellant having a weight ratio of 8:92, the amount of the liquid jetted at one time is too small and the particles do not fly densely over a wide area, which is effective for insecticide. The effect of the ingredients is reduced. Therefore, it is preferable to set the weight ratio of the liquid: propellant to be in the range of 8:92 to 30:70 on the premise of a formulation rich in propellant. More preferably, the weight ratio of the liquid: propellant is in the range of 10:90 to 20:80, and even more preferably in the range of 15:85 to 17:83.

The injection amount of the insecticidal active ingredient (hereinafter, also referred to as Ai amount) by one operation of the operation button 20 is set to 3 mg or more and 20 mg or less. The amount of Ai can be set in the above range by changing the content of the insecticidal active ingredient and the injection amount of the liquid by one operation of the operation button 20. If the amount of Ai is less than 3 mg, the amount of the insecticidal active ingredient sprayed into the space is too small, and the effect of the insecticidal active ingredient is reduced. On the other hand, if the amount of Ai is more than 20 mg, the amount of the insecticidal active ingredient sprayed into the space increases, and it is assumed that it is not preferable in terms of safety especially in a narrow space.

Further, the injection amount of the liquid (insecticidal active ingredient and solvent) by one operation of the operation button 20 is set to 0.1 ml or more and 0.4 ml or less. The injection amount of the liquid by one operation of the operation button 20 can be set within the above range by changing the structure of the valve mechanism or the like. If the amount of the liquid injected by one operation of the operation button 20 is less than 0.1 ml, the amount of the insecticidal active ingredient injected into the space is too small, and the effect of the insecticidal active ingredient is reduced. On the other hand, if the amount of the liquid injected by one operation of the operation button 20 is more than 0.4 ml, the amount of the insecticidal active ingredient injected into the space increases, which is not preferable in terms of safety, especially in a narrow space. A case is assumed.

Next, a case where the aerosol product 1 for exterminating crawling pests configured as described above is used will be described. The aerosol product 1 for exterminating crawling pests may be sprayed into the room as a whole, but it is preferable to spray the aerosol product 1 into a gap in the room where the crawling pests are likely to be lurking. That is, for example, the operation button 20 is operated after the nozzle portion 23 of the aerosol product 1 for exterminating crawling pests is directed to a narrow gap between a wall and furniture in a room or a narrow gap between a wall and an electric appliance. .. The operation button 20 is preferably operated only once, but may be operated a plurality of times when the room is large.

As a result, the insecticidal active ingredient and the solvent are ejected from the nozzle portion 23 together with the propellant by the pressure of the propellant contained in the aerosol container 10. At this time, since the weight ratio is set as described above and the propellant is rich in formulation, when the liquid containing the insecticidal active ingredient and the solvent is jetted from the aerosol container 10, small particles are formed. At the same time, the momentum of the particles becomes stronger, and the ejected particles fly over a wide area and easily float in the air. Furthermore, since the vapor pressure of the solvent is low, the evaporation rate of the solvent forming the injected particles is slowed down, which causes the particles to fly far and to stay in the air for a long time. .. Therefore, particles containing insecticidal active ingredients fly to the back along the sides of furniture and appliances, then wrap around to their backs, fly along the backs and float in the air, and then by their own weight. It falls to near the bottom. In this way, since the particles fly over a wide range even in a narrow gap, the effect of the insecticidal active ingredient is exhibited in a wide range without providing a large-scale device.

The height of the nozzle portion 23 at the time of injection is preferably about 100 cm from the floor surface. This is because if the nozzle portion 23 is too low, the amount of particles diffused upward will decrease, and it will be difficult for the particles to wrap around to the back surface side.

Further, since the aerosol container 10 is a fixed-quantity injection type, even if the particles fly over a wide range as described above, the amount of the insecticidal active ingredient is not injected more than the specified amount, which improves safety and handles. Becomes easier. Further, since the place of use is not limited to under furniture or the like as in the conventional case, versatility is enhanced.

Next, the efficacy test results of the aerosol product 1 for exterminating crawling pests will be described. The efficacy test was performed in the Pete chamber 100 as shown in FIG. The pet chamber 100 has a cubic shape with a side of 180 cm and a volume of 5.82 m ³ . In the pet chamber 100, three pieces of furniture 102, 102, 102 are reproduced by a plurality of cardboard boxes 101. The dimensions of each piece of furniture 102 are 52 cm in depth, 160 cm in height, and 52 cm in width. Further, the gap between the adjacent furniture 102 and 102 is set to 5 cm. The gap between the side surface of the furniture 102 arranged on the left side of FIG. 2 and the wall of the pete chamber 100 is set to 5 cm, and the gap between the back surface of the furniture 102 and the wall of the pete chamber 100 is also set to 5 cm. Although furniture is assumed in FIG. 2, it is not limited to this, and may be an electric appliance (for example, a refrigerator, a washing machine, etc.).

The nozzle portion 23 of the aerosol product 1 for exterminating crawling pests is directed to the gap between the side surface of the furniture 102 arranged on the left side of FIG. 2 and the wall of the pete chamber 100. The height of the nozzle portion 23 from the floor surface is set to 100 cm.

The first mesh bag 104 is arranged at a distance of 50 cm from the tip of the nozzle portion 23 toward the back of the gap, and the first mesh bag 104 is attached to the wall of the pete chamber 100. Similarly, the second mesh bag 105 is placed 100 cm away from the tip of the nozzle portion 23 toward the back of the gap (on the back side of the furniture 102), and 150 cm away from the tip of the nozzle portion 23 toward the back of the gap. The third mesh bag 106 is placed at a distance of 200 cm from the tip of the nozzle portion 23 toward the back of the gap, and the fourth mesh bag 107 is placed at a distance of 250 cm from the tip of the nozzle portion 23 toward the back of the gap. The fifth mesh bag 108 is placed in the bag. The heights of the first to fifth mesh bags 104 to 108 are lowered as the distance from the tip of the nozzle portion 23 increases, and the fifth mesh bag 108 is arranged near the floor surface of the pete chamber 100.

Ten female adults of Smokybrown cockroach are placed in the first to fifth mesh bags 104 to 108 as test insects, respectively. Air can easily flow through the first to fifth mesh bags 104 to 108.

After that, the operation button 23 is operated. The injection amount of the liquid other than the propellant by one operation of the operation button 20 is set to 0.2 ml.

After spraying, leave it for 5 minutes, and after 5 minutes, collect the first to fifth mesh bags 104 to 108 and take out the test insects. The removed test insects were transferred to a clean container and fed with sugar water. The case fatality rate was calculated 48 hours after the transfer to the container.

In Examples 1 to 10 and Comparative Examples 1 to 10 of the present invention, the amount of Ai, the type of solvent, the type of propellant, and the liquid-to-gas ratio are set, respectively, as shown in Table 1. The solvent "IPM" is isopropyl myristate, and "neothio" is neothiosol (manufactured by Chuo Kasei Co., Ltd.) as a saturated hydrocarbon solvent. The "liquid-to-gas ratio" is the weight ratio of the liquid: propellant. The mortality rate (%) after 48 hours was calculated by (dead test insects / all test insects) × 100. “50 cm”, “100 cm”, “150 cm”, “200 cm”, and “250 cm” are distances from the tip of the nozzle portion 23, and indicate places where the first to fifth mesh bags 104 to 108 are arranged. There is. That is, the mortality rate at "50 cm" is the mortality rate of the test insects contained in the first mesh bag 104, and the mortality rate at "100 cm" is the mortality rate of the test insects contained in the second mesh bag 105. The mortality rate at "150 cm" is the mortality rate of the test insects contained in the third mesh bag 106, and the mortality rate at "200 cm" is the mortality rate of the test insects contained in the fourth mesh bag 107. The mortality rate at "250 cm" is the mortality rate of the test insects contained in the fifth mesh bag 108. In addition, "-" is a place where the case fatality rate has not been obtained.

In Examples 1 to 10, the weight ratio of the liquid: propellant is in the range of 8:92 to 30:70, and the vapor pressure of the solvent at 25 ° C. is 7.0 kPa or less, which is lower than that of ethanol. A case fatality rate of 80% or more is obtained even at a distance of 250 cm from the tip of the portion 23.

On the other hand, Comparative Example 1 differs from Example 1 only in the weight ratio of the liquid: propellant, and the weight ratio of the liquid: propellant in Comparative Example 1 is set to 6:94. In Comparative Example 1, the case fatality rate at a distance of 250 cm from the tip of the nozzle portion 23 is only 30%. This is because the amount of the liquid injected at one time is too small due to the excessive amount of the propellant, and the particles do not fly densely over a wide range, and the effect of the insecticidal active ingredient is remarkably reduced.

In Comparative Examples 2 and 3, the solvent is ethanol, but in Comparative Example 2, the mortality rate at a distance of 250 cm from the tip of the nozzle portion 23 is only 60%, and in Comparative Example 3, the mortality rate is 250 cm away from the tip of the nozzle portion 23. The case fatality rate is only 50%. This is because the vapor pressure of ethanol is high, and the injected particles evaporate before they fly far away, shortening the flight distance of the particles.

In Comparative Example 4, the solvent is ethanol, and the weight ratio of the liquid: propellant is set to 50:50. In Comparative Example 4, the case fatality rate at a distance of 250 cm from the tip of the nozzle portion 23 is only 20%. This is because the relationship between the vapor pressure of ethanol described above and the propellant are not rich, so that when the liquid is ejected from the aerosol container 10, it is difficult to become small particles, and the ejected particles are difficult to fly over a wide range. be.

In Comparative Example 5, the weight ratio of the liquid: propellant is set to 50:50. In Comparative Example 5, the case fatality rate at a distance of 250 cm from the tip of the nozzle portion 23 is only 20%. This is because the propellant is not rich, so that when the liquid is jetted from the aerosol container 10, it is difficult for the liquid to become small particles, and the jetted particles are hard to fly over a wide range. Similarly, in Comparative Example 6, the case fatality rate becomes worse.

In Comparative Examples 7 to 9, since the solvent is ethanol, the mortality rate becomes worse even if the weight ratio of the liquid: propellant is changed.

In Comparative Example 10, the weight ratio of the liquid: propellant is set to 40:60, but since the amount of propellant is small, the particles are hard to fly and the mortality rate is deteriorated.

As described above, the vapor of the solvent was lowered and the weight ratio of the liquid: propellant was set to be in the range of 8:92 to 30:70, which is sufficient for the crawling pests hidden in the gap. The extermination effect can be obtained. The above efficacy test was performed only on the cockroach, but as is clear from Examples 1 to 10, the insecticidal active ingredient is attached not only to the cockroach in front of the gap but also to the cockroach in the back, so other than the cockroach. Sufficient extermination effect can be obtained against the cockroach pests such as Smokybrown cockroach, German cockroach, and Smokybrown cockroach.

The above embodiments are merely exemplary in all respects and should not be construed in a limited way. Furthermore, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.

As described above, according to the crawling pest control aerosol product and the crawling pest control method according to the present invention, it can be used for exterminating crawling pests such as cockroaches in a room, for example.

1 Aerosol product for exterminating crawling pests 10 Aerosol container 20 Operation button (injection button)

Claims (2)

Insecticidal active ingredient and
With solvent
With the propellant
In an aerosol product for exterminating crawling pests, which comprises the above-mentioned insecticidal active ingredient, the above-mentioned solvent, and the above-mentioned aerosol container containing the propellant.
The weight ratio of the propellant contained in the aerosol container to the liquid other than the propellant is set to be in the range of 8:92 to 30:70 when the liquid: propellant is used. ,
The aerosol container is an aerosol product for exterminating crawling pests, which is a quantitative injection type in which a predetermined amount of the insecticidal active ingredient and the solvent are injected by one operation of an injection button. The insecticidal active ingredient, the solvent, and the propellant are housed in a fixed-quantity injection type aerosol container that injects the insecticidal active ingredient and the solvent in a predetermined amount by one operation of the jet button, and the propellant and the propellant. The weight ratio with the liquid other than the propellant is set to be in the range of 8:92 to 30:70 when the above liquid: propellant is used.
A method for exterminating crawling pests by injecting the insecticidal active ingredient and the solvent in the predetermined amount from the aerosol container into the gap in the room.

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