JP2022054757A - Bait agent for pest, pest extermination method and pest extermination kit - Google Patents

Abstract

To reduce extremely adverse effect on a beneficial insect, while quickly exterminating pests.SOLUTION: A bait agent for pests contains at least eating ingredients containing sugar, and a repellent component for repelling a beneficial insect.SELECTED DRAWING: Figure 2

Description

The present invention relates to a pest bait agent for selectively exterminating pests, a pest extermination method, and a pest extermination kit.

It has long been known that some insects have sociality. For example, wasps and termites form a group and live in a hierarchy with the queen at the top, and insects with a social structure similar to the human life form are social. It is called an insect. However, it can be said that a group of social insects is essentially a family group, and there are some aspects that are different from human society.

Among the above-mentioned social insects, wasps and the like exist as insects that can be harmful insects, and bait (poison bait) agents are known as one of the methods for controlling social insects such as wasps. There is. That is, by bringing the bait agent back to the nest to the adult wasp, the bait agent can be distributed to other adults or larvae in the nest, and as a result, the entire nest can be destroyed. In this type of bait agent, an eating component for feeding insects is blended.

For example, Patent Document 1 discloses that an animal protein is used as an eating component of a bait agent for wasps. Further, in Patent Document 1, the food for honeybee larvae is a vegetable protein such as pollen, whereas the food for harmful bee larvae such as wasps is an animal protein such as hornworm. Therefore, by taking advantage of this difference and using animal protein as a food feed, it is possible to use it as a selective pest control agent when taking measures against harmful bees such as wasps in the beekeeping industry. There is a description that.

Further, Patent Document 2 discloses that sucrose or fructose dissolved in water is used as another eating component of a bait agent for wasps.

Japanese Unexamined Patent Publication No. 2008-6346 Special Table 9-512435 Gazette

By the way, as described in Patent Document 1, beneficial insects such as honeybees also exist among insects, and therefore, when an insecticide is used outdoors, it is required not to adversely affect the beneficial insects. There is. In particular, in the case of a bait agent, if a honey bee is brought back to the nest, the entire nest of the honey bee may be destroyed, so that the adverse effect is extremely large.

In this regard, Patent Document 1 describes that the influence on honeybees can be eliminated by using animal protein as an eating component, and that animal protein is an eating component of wasp larvae. There is. That is, the bait agent of Patent Document 1 is not intended to be eaten by an adult wasp that can directly harm humans, but is carried into a nest by the adult wasp and then eaten by a larva. It is effective by. As described above, since the bait agent of Patent Document 1 does not directly exterminate the adult wasps, it has not been possible to quickly exterminate the dangerous adult wasps that are required to be exterminated immediately.

On the other hand, sucrose, which is an eating component of Patent Document 2, is a component eaten by adult wasps. Therefore, if the bait agent contains sucrose as an eating component as in Patent Document 2, the adult hornet is brought back to the nest and further distributed to other adults, so that there is an advantage that the adult hornet can be directly exterminated. .. On the other hand, sucrose is also a component eaten by adult honeybees, but if honeybees bring them back to their nests, they will have an extremely large adverse effect as described above.

The present invention has been made in view of this point, and an object of the present invention is to quickly exterminate pests and to minimize adverse effects on beneficial insects.

To achieve the above objectives
The first invention is characterized in that, in a bait agent for pests for applying an insecticidal component to a pest, it contains at least an eating component containing a saccharide and a repellent component repelled by a beneficial insect.

According to this configuration, since the bait agent for pests contains saccharides, various insects are more likely to be attracted to the bait agent for pests. On the other hand, since this pest bait agent contains a repellent component that the beneficial insects repel, the beneficial insects will repel the pest bait agent. Therefore, among the insects, beneficial insects are less likely to be attracted to the pest bait agent, and the attracted pests are more likely to be attracted. The extermination effect is well exhibited. In addition, when the pest is a social insect, the adult insect brings back a part of the bait agent for pests to the nest and gives it to other pests, so that the extermination effect on the nest is also exhibited. The method of applying the insecticidal component to the pest may be a method of feeding the insecticidal component to the pest together with the eating component, or a method of adhering the insecticidal component to the body of the pest trying to eat the eating component.

The second invention is characterized in that the repellent component is ethanol. That is, the wasps that can be exterminated by this pest bait agent do not repel ethanol, but rather are often attracted to ethanol, so that the effect of attracting and exterminating wasps can be enhanced. On the other hand, according to the studies by the inventors of the present application, it has been clarified that the honey bee, which is an example of beneficial insects, repels ethanol. That is, by containing ethanol as a repellent component, the pests such as wasps are attracted, and the beneficial insects such as honeybees are less likely to be attracted to the pest bait agent.

The third invention is characterized in that it is a liquid in which the insecticidal component, the eating component and the repellent component are mixed. According to this configuration, the pest bait agent can be easily installed outdoors by putting it in a container, for example, and the repellent component evaporates into the air to enhance the repellent effect of beneficial insects.

The fourth invention is characterized in that the concentration of the repellent component is 5% by mass or more of the pest bait agent. That is, if the concentration of the repellent component is less than 5% by mass, the repellent effect of the honey bee, which is an example of beneficial insects, can be obtained, but there is a concern that the repellent effect may be reduced. On the other hand, when the concentration of the repellent component is 5% by mass or more, a high repellent effect of honeybees can be obtained.

The fifth invention is characterized in that the ethanol is produced by fermentation of the saccharide. That is, when ethanol is used as the repellent component, ethanol is highly volatile and disappears quickly even if it is premixed with a pest bait agent, but if it is generated by fermentation, it will be a beneficial insect due to ethanol until the sugar is exhausted. The repellent effect can be sustained.

In the sixth invention, a pest bait agent containing at least a saccharide-containing eating component and a pest repellent component is installed outdoors, and the pest bait agent repels the pests and attracts the pests. It is a pest control method characterized by extermination.

The seventh invention comprises a pest bait agent containing an insecticidal component, at least an eating component containing a saccharide, a yeast for fermenting the saccharide, and a container for containing the pest bait agent and the yeast. The pest control kit is characterized in that the container is provided with a evaporation section for evaporating ethanol produced by the fermentation.

According to this configuration, sugar and yeast can be mixed and stored in a container for use before use by the user. Ethanol is produced by fermentation from the pest bait agent contained in the container and is transpired from the transpired part of the container, so that the effect of repelling beneficial insects is enhanced.

According to the present invention, since it contains an eating component containing saccharides and a repellent component that is repelled by beneficial insects, it is possible to quickly exterminate harmful insects with particular sociality and to extremely minimize the adverse effects on beneficial insects. can.

It is a perspective view which looked at the pest control device which concerns on embodiment of this invention from above. It is a vertical sectional view of a pest control device. It is an exploded view of a pest control device. It is an exploded view of a container. It is a figure which shows the component of a pest control kit.

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 a pest control device 1 according to an embodiment of the present invention. As shown in FIGS. 2 and 3, the pest control device 1 includes a pest bait agent A (shown in FIG. 2), a container 2 containing the pest bait agent A, and a hood 4. There is.

The pest bait agent A is a liquid containing an insecticidal component, an eating component, and a repellent component for beneficial insects. As the insecticidal component, an insecticide that does not adversely affect the eating habits of the pests (has no repellent property against the pests) can be used. Further, slow-acting insecticides are preferred. A slow-acting insecticide is one that can act for a predetermined period of time after contact or eating without contacting or eating the pest, causing immediate knockdown or death. It is an insecticide that leads to death from the time when it has passed.

The above-mentioned predetermined time is a time during which the pest can return to the nest after the pest comes into contact with the pesticide or eats the pesticide, and preferably, after returning to the nest, the larvae are taken care of or taken care of. Includes time to contact with other adults. For example, when a wasp is used as a target pest, the predetermined time is about several tens of minutes to several hours. Similarly, when cockroach is used as a target pest, the predetermined time is about several tens of minutes to several hours. The predetermined time can be adjusted to some extent by the concentration of the insecticidal component to be blended in the pest bait agent A. That is, if you want to kill the pests that have returned to the nest relatively quickly, set the concentration of the insecticidal component high, and if you want to keep the pests that have returned to the nest active for a relatively long time, set the concentration of the insecticidal component low. .. In addition, the concentration of the insecticidal component can be appropriately set according to the type of the target pest, the usage scene, and the like.

Examples of slow-acting insecticides that do not adversely affect eating habits include phenylpyrazole insecticides such as fipronil, carbamate insecticides such as carbyl and propoxyl, and neonicotinoid insecticides such as dinotefuran, clothianidin, and imidacloprid. , Boric acid and the like, but are not limited to these. Of these, fipronil is preferred.

The target pests to be exterminated by the pest control device 1 are social pests such as wasps and cockroaches, but other pests that have sociality and are harmful to humans can be targeted. can. Therefore, an insecticide having a slow-acting insecticidal effect on these target pests may be contained as an insecticidal component. The insecticidal component can contain one or more slow-acting insecticides. When two or more kinds of slow-acting insecticides are contained, they can be mixed and used. A social pest is a pest that forms a group and lives in a hierarchy within the group. In some of these pests, the adults take care of the larvae and the adults come into contact with each other.

The eating component is composed of a component eaten by a pest, and an eating component containing at least a sugar can be used. As the saccharide, for example, only any one of monosaccharides, disaccharides and polysaccharides can be used as an eating component, or any two or more can be mixed and used as an eating component. Examples of monosaccharides that can be used as eating components include glucose, fructose, and galactose. Examples of the disaccharide that can be used as an eating component include sucrose (sucrose), maltose (maltose), lactose (lactose) and the like. Examples of the polysaccharide that can be used as an eating component include substances in which a large number of monosaccharide molecules are polymerized by glycosidic bonds, such as starch.

The repellent component for beneficial insects may be any component that is repelled by beneficial insects and not repelled by pests, and examples thereof include ethanol. Since ethanol is contained as a repellent component for beneficial insects, it exerts a repellent effect against honeybees, which are beneficial insects, but hardly exerts a repellent effect against wasps, which are pests. On the other hand, it exerts an attractive effect.

The pest bait agent A can be obtained by mixing an insecticidal component, an eating component, and a repellent component for beneficial insects. The pest bait agent A may contain, for example, water (ion-exchanged water) or the like. Further, the pest bait agent A may contain, for example, any one or any two or more of polyethylene glycol, a surfactant, acetic acid, lactic acid, sodium propate and the like.

As an example of the pest bait agent A, when the pest bait agent A is 100 g, fipronil as an insecticidal component is 0.003 g or more and 0.010 g or less, polyethylene glycol is 0.05 g or more and 0.10 g or less, and an interface. Activator (tween20) 0.1 g or more and 0.5 g or less, fructose-dextrose liquid sugar 10 g or more and 25 g or less, acetic acid 0.03 g or more and 0.10 g or less, lactic acid 0.03 g or more and 0.10 g or less, sodium propate Can be 0.50 g or more and 0.15 g or less, and the balance can be ion-exchanged water. Polyethylene glycol and surfactant may be omitted. Acetic acid and lactic acid are added to improve the attraction to wasps, but may be omitted.

Ethanol, which is a repellent component for beneficial insects, is produced in the pest bait agent A by fermenting the saccharides contained in the pest bait agent A, and is not described as the blending amount in the above examples. For example, by mixing dry yeast with the pest baker A according to the above embodiment, alcoholic fermentation proceeds in the pest baker A, sugar is decomposed, and ethanol and carbon dioxide are produced. This makes the pest bait agent A containing ethanol. The ethanol produced at this time constitutes a repellent component for beneficial insects.

That is, ethanol may not be contained in the pest bait agent A at the stage before the use of the pest bait agent A. The ethanol-free pest bait agent A can also be referred to as an initial bait agent or an alcohol-free bait agent. For example, by adding dry yeast to the pest bait agent A that does not contain ethanol at the start of use, the pest bait agent A that contains ethanol is obtained thereafter. Since alcoholic fermentation is continued as long as sugar remains, it is possible to obtain ethanol-containing bait agent A for pests for a long period of time after the start of use. In addition, since yeast exists in nature and fermentation may occur naturally without adding dry yeast, the addition of dry yeast is not essential.

Further, ethanol may be added to the pest bait agent A in advance without performing alcoholic fermentation. Further, alcohol fermentation may be carried out after adding ethanol to the pest bait agent A in advance.

The concentration of the repellent component for beneficial insects can be 5% by mass or more of the bait agent A for pests. By setting the concentration of the repellent component for beneficial insects to 5% by mass or more of the bait agent A for pests, the repellent effect of honeybees can be particularly enhanced. The bee repellent test is described below.

(Honey bee repellent test)
Prepare a transparent glass ring with a diameter of 10 cm and a length of 20 cm, attach a wire mesh that does not allow honeybees to pass through to one end of the glass ring, and attach 2 cm x 4 cm cotton wool inside the glass ring in the wire mesh. I put it down. Cotton wool was prepared by impregnating it with a sufficient amount (about 2 g) of each of the following test agents. After placing one bee in the glass ring, the other end of the glass ring was closed with a transparent lid. After closing the other end of the glass ring with the lid, observation was performed for 1 hour, and the time and the number of times that the bees in the glass ring ate from the cotton wool were measured.

The test agents are as shown below.

1st test agent sugar water 2nd test agent 2.5% by mass of ethanol sugar water 3rd test agent 5% by mass of ethanol sugar water 4th test agent 10% by mass of ethanol sugar water 5th test agent 15% by mass of ethanol Sugar water 6th test agent 0.06% by mass of lactic sugar water 7th test agent 0.06% by mass of acetic acid sugar water

The test results are shown in Table 2. Table 2 shows the average eating time and the average number of eatings, and shows the average value of the results of two repeated tests. The average eating time indicates how many seconds the eating operation was performed per hour. The average number of times of eating indicates how many times the eating operation was performed per hour.

In the first test agent, which is sugar water containing no ethanol, the average eating time was 37 seconds and the average number of times of eating was 9, whereas the second test agent was 2.5% by mass of ethanol. In the test agent, the average eating time was 27.5 seconds and the average number of times of eating was 7.5 times, and both the time and the number of times were significantly reduced. In particular, the third test agent, which is sugar water having an ethanol content of 5% by mass, has an average eating time of 7 seconds and an average number of eatings of 0.5 times, and has an extremely high repellent effect on honeybees.

(Wasp attraction test)
Next, the hornet attraction test will be described. This attraction test was conducted near the forest in Hatsukaichi City, Hiroshima Prefecture. The test agent is the pest bait agent A described as the above-mentioned example. When the pest bait agent A is 100 g, the insecticidal component fipronil is 0.003 g or more and 0.010 g or less, polyethylene glycol is 0.05 g or more and 0.10 g or less, and the surfactant (tween20) is 0.1 g or more and 0. .5 g or less, fructose-dextrose liquid sugar 10 g or more and 25 g or less, acetic acid 0.03 g or more and 0.10 g or less, lactic acid 0.03 g or more and 0.10 g or less, sodium propatenate 0.50 g or more and 0.15 g or less, balance Is ion-exchanged water.

An appropriate amount of dry yeast was added to this pest bait agent A to promote alcoholic fermentation, and the test was conducted in a state where ethanol was generated. The ethanol concentration in this pest bait agent A is not necessarily constant because it is determined by the balance between the fermentation progress rate and the ethanol volatilization rate, but it is not always constant, but it is outside the normal usage environment (outside the season when wasp nesting is performed). If it is temperature), it reaches 10% by mass or more at the peak of fermentation, and then the concentration of at least 5% by mass or more is maintained for a long period of time until the sugars are completely consumed by fermentation. That is, the ethanol concentration at which a repellent effect is obtained against honeybees is maintained for a long period of time.

Multiple types of examples within the above range were prepared, and each was subjected to multiple attraction tests. Each test time was 3 hours.

The test results showed that the average number of wasps flying was 4.5 times (3 hours), and the average eating time per time was 4 minutes and 44 seconds. That is, it can be said that even if the concentration of ethanol is 5% by mass or more, the wasp does not avoid it, but rather is attracted to ethanol and prefers to eat it.

(Structure of container 2)
Next, the configuration of the container 2 will be described. As shown in FIG. 4, the container 2 includes a cup-shaped member 20, a lid member 21, a liquid absorbing material 22, and an impregnated body 23. The cup-shaped member 20 is made of a resin member that is open upward, and has a bottomed cylindrical shape. The horizontal cross section of the cup-shaped member 20 becomes larger toward the top. The pest bait agent A is housed inside the cup-shaped member 20. The lid member 21 is made of a resin member formed so as to cover the open portion of the cup-shaped member 20 from above. By fitting the lid member 21 to the upper part of the cup-shaped member 20, the lid member 21 and the cup-shaped member 20 can be integrated.

The outer peripheral edge of the lid member 21 is substantially circular. The portion of the lid member 21 located radially outside the upper portion of the cup-shaped member 20 is composed of an inclined surface portion 21a located below the outer peripheral edge portion. The inclined surface portion 21a has an annular shape in a plan view and is continuous in the circumferential direction. For example, a stepped step portion, a grain pattern, or the like may be formed on the inclined surface portion 21a. The inclined surface portion 21a may be omitted or may be a horizontal surface portion.

As shown in FIGS. 2 and 4, a concave portion 21b is formed inside the inclined surface portion 21a of the lid member 21. The concave portion 21b has an annular shape in a plan view and is continuous in the circumferential direction. The concave portion 21b can also be called an annular groove. Further, a through hole 21c that penetrates in the vertical direction is formed in the central portion of the lid member 21. The through hole 21c can be substantially circular, but may be polygonal.

Further, in the central portion of the lid member 21, a vertical wall portion 21d extending in both the upper and lower directions from the peripheral edge portion of the through hole 21c is formed. The inside of the concave portion 21b and the inside of the through hole 21c are partitioned by the vertical wall portion 21d extending upward from the peripheral edge portion of the through hole 21c. Further, the vertical wall portion 21d extending downward from the peripheral edge portion of the through hole 21c has a predetermined length, and is also a portion for positioning the liquid absorbing material 22 described later.

The liquid absorbing material 22 is formed by molding fibers into columns, and is configured to be able to suck and absorb liquid by a capillary phenomenon. In this embodiment, the liquid absorbing material 22 has a columnar shape, but the present invention is not limited to this, and the liquid absorbing material 22 may have a plate shape or a polygonal columnar cross section in the horizontal direction. The liquid absorbing material 22 can also be called a liquid absorbing core. The lower end of the liquid absorbing material 22 reaches the vicinity of the bottom of the cup-shaped member 20 and is located in the pest bait agent A contained in the cup-shaped member 20. On the other hand, the upper end portion of the liquid absorbing material 22 projects upward from the vertical wall portion 21d, and at least the upper end surface 22a of the liquid absorbing material 22 is exposed to the outside of the pest drug adhering device 1. Further, the vertical intermediate portion of the liquid absorbing material 22 is held by the vertical wall portion 21d so as not to fall down while being inserted into the through hole 21c. The upper end portion of the liquid absorbing material 22 does not have to protrude upward from the vertical wall portion 21d, and may be located at the same height as the upper end portion of the vertical wall portion 21d.

The liquid absorbing material 22 is an attracting portion that attracts pests. That is, since the liquid absorbing material 22 is a member that sucks the pest bait agent A and carries it to the upper end surface 22a by the capillary phenomenon, it contains an eating component as well as ethanol, and as described above, it is a social insect. It has the effect of attracting certain wasps. The attracting portion can be formed by the liquid absorbing material 22 and the pest bait agent A.

Further, since the liquid absorbing material 22 sucks the pest bait agent A, the liquid absorbing material 22 is a portion containing a slow-acting insecticidal component. Further, the liquid absorbing material 22 is also a transpiring portion because it is a portion for evaporating the repellent component into the air. In addition to the liquid absorbing material 22, a member impregnated with ethanol may be provided and used as a transpiration section.

The impregnated body 23 is impregnated with an insect growth inhibitor. Insect Growth Regulator (IGR) is an insecticide that inhibits insect molting and emergence by disturbing the balance of hormones associated with insect metamorphosis and molting, resulting in death of the insect. Is. Examples of the insect growth inhibitor that can be used in this embodiment include ethoxazole, pyriproxyfen, methoprene, hydroprene, diflubenzuron and the like. Among these, etoxazole is preferable when the bee is targeted for extermination.

The impregnated body 23 is a member constituting a drug adhering portion for adhering an insect growth inhibitor to pests attracted to the liquid absorbing material 22 which is an attracting portion. Since the pest control device 1 includes the impregnated body 23, it can be said that the pest control device 1 is also a pest drug adhering device capable of adhering an insect growth inhibitor to pests. The impregnated body 23 can also be impregnated with a solution in which an insect growth inhibitor is dissolved in a solvent. Further, the impregnated body 23 may be impregnated with a liquid other than the insect growth inhibitor. The amount of the insect growth inhibitor impregnated into the impregnated body 23 is not particularly limited, but can be set to an amount that lasts for, for example, one month or more when the pest control device 1 is installed outdoors.

The impregnating body 23 can be made of, for example, a member formed of the same fiber as the liquid absorbing material 22, and has an annular shape that fits into the concave portion 21b of the lid member 21. The impregnated body 23 is held by the lid member 21 in a state of being fitted to the concave portion 21b, and at least the upper surface thereof is exposed to the outside of the pest drug adhering device 1 in this state. The impregnated body 23 is positioned horizontally with respect to the lid member 21 and is supported from below by the bottom surface of the concave portion 21b so that the impregnated body 23 is not displaced further downward in the height direction. ing.

The impregnated body 23 fitted in the concave portion 21b is arranged around a portion (upper end surface 22a) exposed to the outside of the pest drug adhering device 1 in the liquid absorbing material 22. More specifically, the impregnating body 23 is formed in an annular shape so as to surround the externally exposed portion of the pest drug adhering device 1 in the liquid absorbing material 22. Further, the impregnated body 23 and the upper portion of the liquid absorbing material 22 are close to each other. For example, the distance between the impregnating body 23 and the liquid absorbing material 22 is set so that when an adult wasp touches the upper part of the liquid absorbing material 22 by eating, the legs and hands come into contact with the upper surface of the impregnating body 23. Has been done. Therefore, when the pest attracted to the liquid absorbing material 22 tries to eat the eating component of the liquid absorbing material 22 and stays in the container 2, the legs, hands, body, etc. of the pest easily come into contact with the impregnated body 23 and come into contact with each other. You can increase the possibility. As a result, the insect growth inhibitor can be attached to the pests attracted to the liquid absorbing material 22. The impregnating body 23 does not have to be annular, and may be provided intermittently in the circumferential direction of the upper end surface 22a of the liquid absorbing material 22, for example. The impregnating body 23 and the liquid absorbing material 22 may be provided side by side in the horizontal direction. Further, the upper surface of the impregnating body 23 may be lower than the upper end surface 22a of the liquid absorbing material 22, and the upper surface of the impregnating body 23 may be higher than the upper end surface 22a of the liquid absorbing material 22.

(Composition of hood 4)
The hood 4 can be provided as needed. Examples of the material of the hood 4 include a resin film or sheet material and water-resistant paper. The hood 4 is formed in an annular shape, and an insertion hole 4a into which a cup-shaped member 20 can be inserted is formed so as to penetrate in the vertical direction in a portion located below the hood 4. As shown in FIG. 2, the diameter of the insertion hole 4a is set to be larger than the outer diameter of the lower part of the cup-shaped member 20 and smaller than the outer diameter of the upper part, and the cup-shaped member 20 is inserted into the insertion hole 4a. It can be held in the hood 4 in the inserted state.

The upper side of the hood 4 is located directly above the lid member 21, and forms a space between the hood 4 and the lid member 21 so that pests can invade. This space is open horizontally so that attracted pests can easily invade. Since the liquid absorbing material 22 and the impregnating body 23 can be covered by the upper side of the hood 4, it is possible to prevent rain or the like from being applied to the liquid absorbing material 22 and the impregnating body 23 when installed outdoors.

The hood 4 is provided with a hanging portion 4b for suspending the pest control device 1 so as to project upward. A thread, a wire, or the like can be passed through the hanging portion 4b, whereby the pest control device 1 can be used by hanging it on a tree branch or a rod.

(Pest control kit)
FIG. 5 shows a pest control kit 100. The pest control kit 100 includes a pest bait agent A contained in a bag 101 and sealed, a container 2, a hood 4, and dry yeast contained in a bag 102 and sealed. The bags 101, 102, the container 2 and the hood 4 can be housed in one packaging box (not shown).

At the time of use, the lid member 21 of the container 2 is opened to transfer the pest bait agent A from the bag 101 to the cup-shaped member 20, and the dry yeast is transferred from the bag 102 to the cup-shaped member 20. As a result, alcoholic fermentation begins and ethanol is produced. After that, the lid member 21 is closed and the liquid absorbing material 22 is immersed in the pest bait agent A.

The configuration of the pest control kit 100 is not limited to this, for example, the pest bait agent A is stored in the container 2 in advance, and the top surface of the lid member 21 is closed with a film (not shown) or the like. It may be sealed. As a result, the bag 101 of the pest bait agent A can be omitted. In this case, at the time of use, the film is peeled off to expose the through hole 21c of the lid member 21, the dry yeast is transferred into the container 20 through the through hole 21c, and then the liquid absorbing material 22 is inserted into the through hole 21. do.

Further, the impregnated body 23 can be sealed in the concave portion 21b until the start of use. For example, by blocking the concave portion 21b with a film (not shown), the impregnated body 23 can be stored without being exposed to the outside air. The impregnated body 23 can be exposed by peeling off the film at the start of use.

(Pest control method)
Next, a pest control method using the pest control device 1 configured as described above will be described. The pest control device 1 containing the pest bait agent A in the container 2 is installed outdoors. The installation location is not particularly limited, and may be a forest or a residential area. Further, the pest control device 1 may be suspended and installed, or may be placed on a table, a desk, the ground, or the like. Since the pest control device 1 continues to produce ethanol by alcoholic fermentation, the ethanol concentration in the pest bait agent A can be maintained at a predetermined level or higher.

When the pest control device 1 is installed, the pests are attracted by the liquid absorbing material 22. At this time, since the pests are also attracted by ethanol as described above, the effect of attracting the pests can be enhanced. On the other hand, since honeybees repel ethanol, honeybees, which are beneficial insects, are rarely attracted.

Here, since the saccharide contained in the pest bait agent A is an eating component of the adult wasp, for example, the eating property is good when the adult wasp is attracted. When the attracted adult wasp eats the pest bait agent A, the insecticidal component is taken into the body of the adult. Here, by using the insecticidal component as a slow-acting insecticide, the adult wasp does not die immediately and can return to the nest.

On the other hand, when the adult wasp touches the mouth on the upper part of the liquid absorbing material 22 by the eating motion, the legs and hands come into contact with the upper surface of the impregnated body 23, so that the insect growth inhibitor adheres to the body. Therefore, this adult wasp returns to the nest with the insect growth inhibitor attached to the body.

It is considered that the adult wasp returning to the nest distributes the eaten pest bait agent A to the other adults in the nest. Since the pest bait agent A contains a slow-acting insecticidal component, other adults in the nest also take up the slow-acting insecticidal component into the body.

On the other hand, wasp larvae mainly eat animal proteins. Since the pest bait agent A does not contain animal protein, it is unlikely that the above-mentioned adult wasp returning to the nest will distribute the pest bait agent A to the larvae of the nest. However, an insect growth inhibitor is attached to the body of the above-mentioned adult wasp. When this adult wasp takes care of the larva, the insect growth inhibitor adheres to the body of the larva. As a result, the larvae cannot emerge normally and eventually die. Therefore, it can be said that the insect growth inhibitor in this extermination method is an insecticidal component for larvae.

And since the above-mentioned adult wasp eats a slow-acting insecticide, it eventually dies. The same applies to other adults in the nests fed with the pest bite agent A from this adult wasp. Therefore, it can be said that the slow-acting insecticide in this extermination method is an insecticidal component for adults.

As described above, the entire nest of wasps can be exterminated by the pest extermination method of the present embodiment.

Even if the attracted pests are other than wasps, the saccharides contained in the pest bite agent A are the eating components preferred by many pests, and therefore have good eating habits. Also eat. As a result, the extermination effect is satisfactorily exhibited against pests more than wasps. Further, if the pest brings back a part of the pest bait agent A to the nest and gives it to other pests, the extermination effect on the nest is also exhibited.

Further, even if it is a pest other than wasps, when it is attracted to the liquid absorbing material 22, the impregnated body 23 is arranged in the vicinity thereof, so that it becomes easy to come into contact with the impregnated body 23 and is impregnated into the impregnated body 23. Insect growth inhibitors adhere to pests. If the pest to which the insect growth inhibitor is attached is a larva, the molting and emergence of the larva are inhibited, resulting in death. When the insect growth inhibitor adheres to an adult, the insect growth inhibitor adheres to the larva when the adult returns to the nest, for example, and comes into contact with the larva. As a result, the larvae that are not attracted to the attracting part also die.

(Action and effect of the embodiment)
As described above, according to this embodiment, since the eating component containing sugar and the repellent component repelled by the beneficial insects are contained, the beneficial insects can be quickly exterminated while quickly exterminating the harmful insects having a special social nature. The adverse effects can be extremely reduced.

In addition, since the insect growth inhibitor can be attached to the attracted pests, a sufficient extermination effect can be obtained without having the larvae eat the foodstuff containing the insecticidal component.

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

As described above, the present invention can be used for exterminating pests such as wasps.

1 Pest control device (pest drug adhering device)
2 Container 22 Liquid absorbent 23 Impregnated body 100 Pest control kit A Pest bait agent

Claims (7)

In pest bait agents for applying pesticides to pests
Eating ingredients that contain at least sugar,
Repellent ingredients that beneficial insects repel,
A pest bait agent characterized by containing. In the pest bait agent according to claim 1,
The pest bait agent, characterized in that the repellent component is ethanol. In the pest bait agent according to claim 2,
A pest bait agent, which is a liquid in which the insecticidal component, the eating component and the repellent component are mixed. In the pest bait agent according to claim 3,
A pest bait agent characterized in that the concentration of the repellent component is 5% by mass or more of the pest bait agent. The pest bait agent according to any one of claims 2 to 4.
The ethanol is a pest bait agent produced by fermentation of the sugar. A pest bait agent containing at least a saccharide-containing food component and a repellent component that beneficial insects repel is installed outdoors.
A pest control method comprising repelling beneficial insects with the pest bait agent and attracting and exterminating the pests. A pest bait agent containing at least an eating ingredient containing sugars,
Yeast that ferments the sugar and
A container for containing the pest bait agent and the yeast is provided.
A pest control kit characterized in that the container is provided with a transpiring portion for transpiring ethanol produced by the fermentation.

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