JP2016007141A - Aqueous bait containing boric acid as active ingredient and pest insect control instrument for creeping sanitary insect pest receiving aqueous bait - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique that prevents dictyoptera insects such as cockroaches being creeping sanitary insect pests safely and efficiently.SOLUTION: The present invention provides aqueous baits containing a boric acid of 1-5 mass% for preventing dictyoptera insects. The present invention further provides a pest insect control instrument including a bottle part receiving the aqueous baits, a bait receiving part provided with a liquid suction part for bringing the inside of the bottle part into communication with the outside thereof through a first opening part provided on an upper surface of the bottle part, and a cover part for covering the upper part of the first opening part and locked with a gap between the bottle part and itself, in which the aqueous baits are boric acid solution.

Description

  The present invention relates to an aqueous bait containing boric acid as an active ingredient and a dwarf sanitary pest control device containing the aqueous bait.

  Cockroaches, which are examples of dwarf sanitary pests, are very important as pests to be controlled. Various control methods have been employed for cockroaches.

  Patent Document 1 discloses a bait agent as a sanitary pest control agent, Patent Document 2 discloses a solid poison bait for controlling pests, and Patent Document 3 discloses an aqueous solution for controlling pests. A bait agent is disclosed. Since the aqueous bait disclosed in Patent Document 3 is in a liquid state, it is easier to prepare than the well-known gel type (flexible solid), gummy type (elastic solid), powder, etc. It is also excellent as a pest control agent. Patent Document 4 discloses a pest control device having a configuration in which a chemical solution inside a container is sucked through an elongated core toward an upper opening of a container containing a chemical solution containing an insecticidal substance in water. It is disclosed.

  As described in Patent Document 2, boric acid has been used for a long time in the form of solid (so-called borate dango) for the purpose of repelling cockroaches. Patent Documents 3 and 4 list boric acid as an example of the active ingredient of the aqueous bait agent, and Patent Document 5 describes that the boric acid concentration in the boric acid aqueous solution is 3 to 30%. Has been. Patent Document 5, which teaches the use of 3% or more boric acid, has a boric acid aqueous solution for the purpose of suppressing precipitation of boric acid crystals during storage in a high concentration (3% or more) boric acid aqueous solution. A technique for adding borax to a cocoon is disclosed.

JP 10-139604 A (published May 26, 1998) JP 2007-070275 A (published March 22, 2007) JP 2000-053505 A (published on February 22, 2000) JP 2012-157322 A (released on August 23, 2012) Japanese Patent Laid-Open No. 9-263507 (released on October 7, 1997)

  However, as described in Patent Document 5, boric acid is hardly dissolved in a solvent. In Patent Document 5, a means for improving the solubility of boric acid to obtain a high-concentration boric acid solution is studied. Thus, the cockroach control technology using boric acid in the form of solution teaches that boric acid should be used in as high a concentration as possible, and the improved technology also has a problem that occurs in a high concentration boric acid solution. Improvement (suppression of boric acid precipitation). That is, no technology has been known so far for effectively using a boric acid solution having a concentration low enough not to consider the precipitation of boric acid for controlling cockroaches.

  An object of the present invention is to provide a technique for effectively using a low-concentration boric acid solution for controlling cockroaches.

  As a result of intensive studies on matters to be considered in order to effectively function a low-concentration boric acid solution, the present inventors have used a specific boric acid solution in combination with a control device having a specific configuration to increase the The present inventors have found that the effect of controlling cockroaches comparable to a boric acid solution having a concentration is achieved, and have completed the present invention. That is, the present invention includes the following inventions.

  The pest control device according to the present invention communicates between the inside of the bottle part and the outside through the bottle part containing the aqueous bait agent and the first opening provided in the upper surface part of the bottle part. A bait agent storage portion provided with a liquid absorbing portion, and a cover portion that covers the upper portion of the first opening and is locked with a gap between the bottle portion and the aqueous bait. The agent is an aqueous boric acid solution.

  With the above-described configuration, even if the boric acid aqueous solution is used in a concentration range that has not been conventionally envisaged for the purpose of pest control, an effect comparable to that conventionally used can be obtained.

  In the present invention, the boric acid aqueous solution preferably does not contain borax. The present invention exhibits a sufficient control effect even with a low-concentration boric acid aqueous solution. Moreover, the effect is much better than when borax is included.

  The cover portion may partially cover the upper surface portion or the entire upper surface portion, and when the cover portion partially covers the upper surface portion, the upper surface portion extends from the end of the cover portion. Is preferably 6.5 mm or more, and when the cover portion covers the entire upper surface portion, the distance from the end of the upper surface portion to the cover portion is 6.5 mm or more. preferable. Thereby, the efficiency with which the target pest approaches the liquid absorption part can be significantly improved. Furthermore, a very high control effect with an aqueous boric acid solution is obtained in a concentration range not previously envisaged.

  The liquid absorption part may be composed of a liquid absorption core, but preferably has a liquid absorption core and a sheath that wraps the liquid absorption core. By wrapping in the sheath, breakage and / or deformation of the liquid absorption core can be prevented. In addition, by controlling the bottle part and the liquid absorption part through the sheath, the control device can be used without causing the boric acid aqueous solution to leak from the bottle part. In this case, it is more preferable that an end portion of the sheath is configured with a stopper portion that is in close contact with the first opening provided on the upper surface portion of the bottle portion. Furthermore, when the sheath has a configuration that wraps the absorbent core so as to keep the contact area with the boric acid aqueous solution constant, the absorbent core is irrespective of the amount of the boric acid aqueous solution remaining inside the bottle portion. The amount of boric acid aqueous solution sucked up from can be kept constant.

  The second opening is preferably provided in the upper surface of the bottle part or the stopper part, so that it is not necessary to consider the pressure resistance of the bottle part when configuring the appliance. Furthermore, it is preferable that a gas-permeable liquid sealing part for sealing the liquid inside the bottle part covers the second opening, whereby an aqueous bait agent when the internal pressure of the container rises. Can be prevented from leaking outside through the water absorbent core.

  The aqueous bait preparation according to the present invention is characterized by containing 1 to 5% by mass of boric acid in order to control reticulate insects, and is preferably in the form of an aqueous solution. The aqueous bait preparation according to the present invention may further contain a neonicotinoid compound, and further contains one or more sugars selected from the group consisting of glucose, fructose, sucrose and maltose. It is preferable that the sugar content is 25% by mass or less. The aqueous bait preparation according to the present invention preferably has a viscosity measured by a B-type viscometer in the range of 2.8 to 4 mPa · s (25 ° C., 60 rotations, after 50 seconds).

  The present invention allows a target pest to suck a large amount of an aqueous bait, and at the same time, suppresses the precipitation of boric acid crystals from the aqueous bait, and further allows the target pest to ingest the aqueous bait. Prevents clogging at the liquid absorption part by the agent, and avoids freezing during storage.

It is a perspective view showing the whole composition of one embodiment of the present invention. It is a perspective view showing the whole composition of one embodiment of the present invention. It is a side view showing the whole composition of one embodiment of the present invention. It is sectional drawing which shows the whole structure of one Embodiment of this invention. It is a perspective view which shows the principal part structure of one Embodiment of this invention. It is sectional drawing which shows the principal part structure of one Embodiment of this invention. It is sectional drawing which shows the principal part structure of one Embodiment of this invention. It is the schematic which shows the principal part structure of one Embodiment of this invention. It is the schematic which shows the principal part structure of one Embodiment of this invention. It is the upper view and perspective view which show the principal part structure of one Embodiment of this invention. It is a perspective view which shows the principal part structure of one Embodiment of this invention. It is sectional drawing which shows the principal part structure of one Embodiment of this invention. It is sectional drawing which shows the principal part structure of one Embodiment of this invention. It is sectional drawing which shows the principal part structure of one Embodiment of this invention.

[1] Aqueous Bait Agent The present invention relates to an aqueous bait agent (ie, an aqueous solution for controlling dwarf sanitary pests) for controlling sanitary pests having the property of walking around on the ground (i.e., dwarf sanitary pests). Bait preparation). In particular, by using a boric acid aqueous solution as the aqueous bait agent, the present invention can efficiently control reticulate insects.

  The aqueous bait preparation of the present invention contains boric acid as an active ingredient. Boric acid has long been used as an active ingredient in cockroach repellents, and so-called “borate dango” is well known as its form.

  The pests targeted by the aqueous bait of the present invention are reticulate insects (such as German cockroaches, black cockroaches, American cockroaches, flying cockroaches, cockroaches, etc.), and the aqueous bait preparations of the present invention are particularly It is effective against this.

  Water is essential as a solvent for constituting the aqueous bait preparation of the present invention, and the aqueous bait preparation of the present invention is basically composed of boric acid and water. And it is preferable to keep the liquid state so that the target pest is easy to eat, and the form of the aqueous bait preparation of the present invention is preferably an aqueous solution, a dispersion, or a suspension, more preferably an aqueous solution. .

  The water constituting the aqueous bait preparation of the present invention may not be purified as long as it does not contain special impurities (for example, a substance that inhibits the repellent effect of target pests), but distilled water, ion-exchanged water, etc. The purified water is preferably used.

  A water-soluble organic solvent may be used together with water as the solvent. In this case, examples of the organic solvent include ethanol, ethylene glycol, propylene glycol, glycerin, and the like, but are not limited to these as long as they are compatible with water. .

  When a water-soluble organic solvent is used as a medium together with water, if the amount of the water-soluble organic solvent is too much, the characteristics as an aqueous bait agent are impaired. Therefore, the content in the aqueous bait agent is usually 50% by mass or less. In contrast, the water content and the water-soluble organic solvent content are preferably higher than the water-soluble organic solvent.

  It is preferable that the boric acid as an active ingredient in the said aqueous bait agent is 1-5 mass%, and it is more preferable that it is 2-3 mass%. In addition, although the aqueous bait agent of this invention has sufficient control effect even if it is a low concentration boric acid aqueous solution, you may use it combining the well-known technique for improving the solubility of boric acid. As described in Patent Document 5, borax may be added to suppress the precipitation of boric acid, but the addition of borax suppresses the effect of the present invention as shown in Examples described later. Therefore, it is preferable that the aqueous bait preparation of the present invention does not contain borax.

  An aqueous solution in which an active ingredient for controlling pests other than boric acid is dissolved in water or a mixed solvent of water and an aqueous medium is also included in the present invention. As an active ingredient of the aqueous bait preparation of the present invention, those which can be used in addition to boric acid include neonicotinoid compounds such as nitenpyram, acetamiprid, imidacloprid, thiamethoxam , Thiacloprid, dinotefuran, clothianidin, and the like, but those that can be used in addition to boric acid as an active ingredient of the aqueous bait used in the present invention are not limited thereto.

  The aqueous bait preparation of the present invention is preferably non-scattering or non-volatile, and in addition to the active ingredient and water, dietary ingredients, attractants and / or fragrances, surfactants, preservatives, ultraviolet absorbers, Other components such as a water-soluble organic solvent and a pH adjuster may be appropriately contained.

  Preferred dietary ingredients for aqueous baits include, but are not limited to, sugars, lipids, starches, proteins, amino acids, and the like, and are not particularly limited as specific ingredients, and various substances known in the art may be used. The content thereof is usually 25% by mass or less as the content in the aqueous bait. Preferably, 5 to 20% by mass, more preferably 7 to 15% by mass of a natural sweetener is included in the aqueous bait. Examples of natural sweeteners include glucose (glucose), fructose (fructose), sucrose (sucrose), Sugars selected from the group consisting of maltose (malt sugar) and the like are preferably used alone or in combination.

  In addition, the aqueous bait preparation of the present invention may contain an attractant (and / or fragrance) that attracts the target pest. Preferred attractants include, but are not limited to, flavors, animal and plant extracts, pheromones, etc., and are not particularly limited as specific components, and various substances known in the art can be used alone. Or may be combined as appropriate.

  When using an attractant and a fragrance | flavor, the usage-amount is arbitrary, but generally as a content in an aqueous bait agent, it is 1 mass% or less, respectively, Preferably it is 0.5 mass% or less.

  When using a surfactant, the amount used thereof is preferably 10% by mass or less, more preferably 3% by mass or less as the content in the aqueous bait agent.

  In addition, the aqueous bait agent may contain antiseptics (antioxidants, preservatives, etc.), fragrances, and the like, if necessary, and the content thereof is about 0.5% by mass or less. . Also about these, a specific component is not specifically limited, What is necessary is just to use various well-known substances in the said field | area.

  In addition, if necessary, various components other than those exemplified above, which are usually used as an aqueous bait agent such as a dye, may be appropriately contained.

  The aqueous bait agent of the present invention preferably has a viscosity of 2.8 to 4 mPa · s (after 25 ° C., 60 revolutions, after 50 seconds), in particular, as measured with a B-type viscometer, More preferably, it is within the range of 3.1 to 4 mPa · s. Thereby, not only the effectiveness of the active ingredient of the aqueous bait agent is maximized, but also crystallization can be suppressed and clogging of the liquid absorbent core in the control device of the present invention described later can be prevented.

[2] Control Instrument The use of the aqueous bait preparation of the present invention using the control instrument described below maximizes the effectiveness of the active ingredient of the aqueous bait preparation. That is, this invention provides the control instrument which accommodated the aqueous bait agent mentioned above.

  When placing a dwarf sanitary insect pest control device containing a chemical solution indoors, especially in a human living space, the chemical solution does not come into contact with people when touching the arranged device, or the chemical solution when the device falls down Is strongly demanded not to leak. If the control instrument of the present invention is used, it is possible to avoid the chemical solution from coming into contact with a person or the chemical solution from leaking out.

  Embodiments of the present invention will be described below. FIG. 1 is a perspective view of a control device 10 according to an embodiment of the present invention, and FIGS. 2a to 2c are a perspective view, a side view, and a cross-sectional view of the control device 10 according to an embodiment of the present invention, respectively. is there.

  The control instrument 10 of this embodiment includes a bait agent storage portion 9 and a cover portion 7 that covers the bait agent storage portion 9. The bait agent storage unit 9 includes a bottle unit 1 and a liquid absorption unit 2 for sucking out the aqueous bait agent 6 from the inside of the bottle unit 1 when the aqueous bait agent 6 is stored inside the bottle unit 1. The upper surface portion 1 a and the liquid absorbing portion 2 of the bottle portion 1 are covered with a cover portion 7.

  The bottle portion 1 includes a bottom portion 1b that faces the floor surface when the control device 10 is placed on the floor surface, and an upper surface portion 1a that is not intended to face the floor surface. Is provided with a first opening (micropore) 3. The liquid absorption part 2 has a configuration in which the first opening 3 is sealed and the inside of the bottle part 1 is communicated with the outside through the first opening 3.

  Although the liquid absorption part 2 may consist only of a liquid absorption core, it is preferable to have the sheath 2a which encloses the liquid absorption core 2b and the liquid absorption core 2b, and is absorbed by being wrapped in the sheath 2a. Breakage and / or deformation of the core 2b can be prevented. In addition, when the sheath 2a has a configuration in which the absorbent core 2b is wrapped so as to keep the contact area with the aqueous bait agent 6 constant, regardless of the amount of the aqueous bait agent 6 remaining in the bottle portion, The amount of the aqueous bait 6 sucked up from the liquid absorbent core can be kept constant. Furthermore, the sticking instrument 10 can be used without causing the aqueous bait agent 6 to leak from the bottle part 1 by bringing the bottle part 1 and the liquid absorbing part 2 into close contact with each other via the sheath 2a. In this case, it is more preferable that the end portion of the sheath 2a is configured with a stopper portion 2c that is in close contact with the first opening 3 provided on the upper surface portion 1a of the bottle portion 1.

  FIGS. 1 and 2c show a liquid absorbing part 2 provided with a sheath 2a and a liquid absorbing core 2b that fits through the lumen of the sheath 2a. And an end face in the outer direction (also referred to as an inner end and an outer end, respectively) and a side face that is in close contact with the lumen of the sheath 2a, at the end of the sheath 2a in the vicinity of the outer end of the liquid absorbent core 2b. A plug portion 2c that is in close contact with the first opening 3 is configured.

  The aqueous bait agent 6 is accommodated in the bottle part 1, the liquid absorbing part 2 is inserted from the outside of the bottle part 1 into the inside through the first opening 3, and the stopper part 2 c is the first opening part 3. , The inner end of the liquid absorbent core 2 b comes into contact with the aqueous bait agent 6, and the outer end of the liquid absorbent core 2 b faces the outside of the bottle part 1. Since the first opening 3 is sealed by the liquid absorption part 2 and the lumen of the sheath 2a is in intimate contact with the liquid absorption core 2b, the liquid absorption core is provided between the inside and the outside of the bottle part 1. The aqueous bait agent 6 inside the bottle part 1 is sucked out to the outside of the bottle part 1 through the liquid absorbent core 2b.

  Thus, the control instrument 10 of this embodiment is the aqueous bait agent sucked up to the end face of the external end of the liquid absorption core 2b of the liquid absorption part 2 by the dwarf sanitary insect pest which approached the upper surface part 1a of the bottle part 1. It is an instrument that controls insect dwarfing pests that kill insects by licking 6.

  The control instrument 10 of this embodiment is an instrument that can be used without causing the aqueous bait 6 to leak from the bottle part 1. The shape of the bottle part 1 is not limited to the semicircular shape shown in FIG. 1 or the like as long as the pest can reach the outer end of the liquid absorbent core 2b. It may be designed in consideration of the amount of the aqueous bait 6 to be accommodated in the inside of the bottle part 1 and the user's preference regarding the appearance, and may be a cylindrical shape, a prismatic shape (cube or cuboid), or a cone or pyramid shape. There may be.

  Since the control device 10 includes the cover portion 7 that functions as a child proof, it is possible to eliminate the possibility that an infant touches the liquid absorbing portion 2 exposed on the outer surface of the bait agent storage portion 9.

  The cover part 7 covers the upper part of the first opening 3 and is locked to the bottle part 1 with a gap between the cover part 7 and the bottle part 1. The cover part 7 has a locking part 7 a for securing to the bottle part 1. In the control device 10 shown in FIGS. 2a to 2c, convex portions 7b (leg portions 7b ′ and hook portions 7b ″) formed on the edge of the cover portion 7 communicate with the locking portions 7a. The recess forms an intrusion port 8 through which the target pest approaches the liquid absorption part 2 from the outside of the control device 10.

  2A to 2C show the cover portion 7 having a structure covering the entire surface of the bottle portion 1 along the shape of the upper surface portion 1a. As long as it covers the upper part of the first opening 3 and is locked to the bottle part 1 so as to avoid touching the liquid-absorbing part 2, it does not prevent the target pest from approaching the liquid-absorbing part 2. If there is, the entire upper surface portion 1a may be covered or a part of the upper surface portion 1a may be covered.

Schematic diagrams illustrating the relationship between the bottle part 1 and the cover part 7 are shown in FIGS. When the cover portion 7 partially covers the upper surface portion 1a (FIG. 4a), that is, when the intrusion port 8 is defined by the upper surface portion 1a and the cover portion 7, a recess and / or at the edge of the cover portion 7 The convex part is not necessary. The distance d ₁ of the gap between the bottle part 1 and the cover part 7 may be a distance (3 mm or more) at which the target pest is likely to enter and exit, but the end part 7c that defines the entrance 8 in the cover part 7 When the shortest distance d ₂ between the bottle portion 1 than 6.5 mm, it is possible to greatly improve the efficiency of pests of interest approaches the liquid absorbing section 2.

Further, when the cover portion 7 covers the entire upper surface portion 1a (FIG. 4b), that is, when the entry port 8 is defined by the floor surface and the cover portion 7, a concave portion that functions as the entry port 8 is a cover portion 7. It suffices if it is provided at the edge of the. The distance d ₁ between the bottle portion 1 and the cover portion 7 and the distance d ₃ between the end portion 7c defining the entry port 8 in the cover portion 7 and the floor surface are the distances at which the target pests easily enter and exit ( may if 3mm or more), when the shortest distance d ₄ between the end portion 1c and the cover part 7 of the bottle portion 1 than 6.5 mm, greatly improved the efficiency of pests of interest approaches the wick 2b Can be made.

In particular, d ₂ to d ₄ described above are preferably less than 13 mm. By having such a configuration, the control device 10 can prevent the infant from touching the liquid absorption part 2 by mistake without preventing the target pest from approaching the liquid absorption part 2. it can.

  The cover portion 7 may have a cylindrical shape, a prismatic shape (cube or rectangular parallelepiped shape), a cone shape or a pyramid shape as in the case of the bottle portion 1, and only the shape shown in FIGS. Instead, the shape shown in FIG. 5 may be used. In the cover portion shown in FIG. 5, an entrance 8 is formed in a direction perpendicular to the Z direction (mainly the X direction) in the drawing, and a region facing the liquid absorbing portion 2 is indicated by a virtual line.

  Moreover, in order to avoid that the aqueous bait agent 6 of the bottle part 1 evaporates by the time of use of the control apparatus 10, the outer end part of the liquid absorption part 2 is used until the cap or seal which can be easily detached by the user is used. It is preferable to cover. In the case of adopting such a configuration, the bottle 10 and the cover 7 may be provided separately in the control device 10, and when the control device 10 is used, the cover 7 is the bottle part from which the cap or the seal is removed. It is sufficient to be locked to 1.

  As shown in FIGS. 3 a to 3 c, a second opening 4 may be provided in the upper surface portion 1 a of the bottle portion 1, and in this case, the aqueous bait agent 6 is sealed inside the bottle portion 1. It is preferable that the air-permeable liquid sealing portion 5 for covering the second opening 4.

  Patent Document 4 describes that since the lid body has a close contact means by fitting with the opening of the container body, the chemical liquid in the container body does not leak even if it is accidentally overturned. Yes. Patent Document 4 also discloses that when the lid fitted to the opening seals the container main body, the internal pressure decreases and the chemical liquid is hardly absorbed by the core material, so that the chemical liquid is always stably absorbed by the core material. In addition, it is described that the lid preferably has one or a plurality of minute holes through which air does not pass but chemicals pass.

  In the pest control device described in Patent Document 4, since the opening and the lid are in close contact with each other by fitting, the chemical liquid does not leak between the opening and the lid even if the container falls. The minute holes formed in the lid can be said to have a configuration in which the chemical solution does not pass through the air but does not pass through the air as long as the container is not overturned so that the chemical solution does not contact the hole. However, if the container falls and the chemical solution is in contact with the hole, it is clear that the chemical solution leaks from the hole unless it is erecting so quickly.

  In Patent Document 4, inconvenience due to a decrease in the internal pressure of the container is taken into account, but no countermeasure is taken against the possibility that the chemical liquid overflows through the core material when the internal pressure increases. In fact, a liquid reservoir is provided on the upper surface of the lid body of the pest control device described in Patent Document 4 to keep the soaked medicinal solution, and this is a configuration on the premise that the medicinal solution is leached out. Is shown.

  The control device 10 shown in FIGS. 3 a to 3 c accommodates the aqueous bait agent 6 inside the bottle portion 1, and directs the liquid absorbing portion 2 from the outside to the inside of the bottle portion 1 through the first opening 3. When the stopper 2c is in close contact with the first opening 3, the inner end of the liquid absorbent core 2b contacts the aqueous bait agent 6, and the outer end of the liquid absorbent core 2b faces the outside of the bottle section 1. . Since the first opening 3 is sealed by the liquid absorption part 2 and the lumen of the sheath 2a is in intimate contact with the liquid absorption core 2b, the liquid absorption core is provided between the inside and the outside of the bottle part 1. 2b and the 2nd opening part 4 are connected, The aqueous bait agent 6 inside the bottle part 1 is sucked out of the bottle part 1 through the liquid absorption core 2b, and the gas inside and outside the bottle part 1 is The inside and outside of the bottle part 1 can be moved through the second opening 4.

  Since the air-permeable liquid sealing portion 5 covers the second opening 4, the aqueous bait agent 6 contained in the bottle portion 1 leaks from the second opening 4 even if the bottle portion 1 falls. do not do. The 2nd opening part 4 should just be provided in area | regions other than a bottom face part, and is not limited to the upper surface part 1a of the bottle part 1. FIG. That is, the 2nd opening part 4 may be provided in the stopper part 2c. A configuration in which the second opening 4 is provided in the stopper 2c is shown in FIG. 3c.

  Since the control device 10 of this embodiment is provided with the second opening 4, the pressure resistance of the bottle portion 1 may not be considered. Furthermore, even if the container is heated as the room temperature rises, the air inside the expanded bottle part 1 is expelled from the second opening 4 to the outside of the bottle part 1, so that the inside of the bottle part 1 The aqueous bait 6 does not leak out of the bottle part 1 through the liquid absorbent core 2b. In addition, the 2nd opening part 4 (and liquid sealing part 5) must be covered with the cover part 7 similarly to the upper surface part 1a and the liquid absorption part 2 of the bottle part 1 in order to avoid the damage by the contact of the infant. Is preferred.

  The material of the bottle part 1 is not particularly limited as long as it does not affect the aqueous bait agent 6 accommodated therein. For example, polyester resin (for example, polyethylene terephthalate (PET)), olefin resin (for example, polypropylene (PP), polyethylene) (PE) etc.), glass, ceramics and the like are preferably used. Moreover, in order to visually observe the amount of the aqueous bait agent 6 remaining inside, the bottle portion 1 may be transparent.

  The material of the sheath 2a is not particularly limited as long as it does not affect the aqueous bait 6 to be accommodated, and those exemplified as the material of the bottle part 1 may be used. By providing the sheath 2a, the surface area of the exposed liquid absorbent core 2b can be reduced and leaching can be prevented. Needless to say, it is possible to prevent the seepage due to the fluctuation of the internal pressure of the bottle portion 1 when standing upright. If the length of the sheath 2a is set so that the contact area between the aqueous bait agent 6 and the liquid absorbent core 2b is kept constant from the aspect where the amount of the aqueous bait agent 6 remaining inside is large to the aspect where it is small. The contact area is kept constant as the length of the liquid absorbent core 2b exposed from the sheath 2a is shorter. That is, it is preferable that all the side surfaces of the liquid absorbent core 2b are covered with the sheath 2a inside the bottle portion 1, and the end of the sheath 2a may coincide with the position of the internal end of the liquid absorbent core 2b. More preferred. With this configuration, the liquid absorbent core 2b comes into contact with the aqueous bait agent 6 only at the end face of the inner end.

  However, in this case, in order not to prevent the contact between the inner end of the liquid absorbent core 2b and the aqueous bait agent 6, the sheath 2a and the liquid absorbent core 2b are separated from the bottom 1b of the bottle part 1 and contacted with the bottom 1b. You must not let it.

  On the other hand, by bringing the inner end of the liquid absorbent core 2b into contact with the bottom 1b of the bottle part 1, the position of the liquid absorbent part 2 can be stably maintained, and the aqueous bait accommodated inside the bottle part 1 The agent 6 can be sucked up from the side surface of the liquid absorbent core 2b without leaving any excess. In this case, it is necessary to expose the side surface of the liquid absorbent wick 2b from the sheath 2a, but by reducing the length of the liquid absorbent wick 2b protruding from the distal end of the sheath 2a as much as possible, the remaining amount of the aqueous bait agent 6 The contact area between the aqueous bait agent 6 and the liquid absorbent core 2b can be kept constant except for a small amount of liquid, and the liquid absorbent core can be used without any excess of the aqueous bait agent 6 contained in the bottle portion 1. Can be sucked up from the side of 2b. The length of the liquid absorbent core 2b protruding from the distal end of the sheath 2a may be set in consideration of the material of the liquid absorbent core 2b based on the amount of the aqueous bait agent 6 to be sucked up per unit time. For example, the bottom surface portion 1b of the bottle portion 1 may have a shape in which a portion directly below the lower end of the liquid absorbent core 2b is pushed downward from the edge portion (not shown). Thereby, since the aqueous bait agent 6 is collected in the vicinity of the liquid absorption core 2b protruding from the tip of the sheath 2a, the remaining amount of the aqueous bait agent 6 can be extremely reduced.

  A liquid-absorbing material may be used for the liquid-absorbent core 2b, such as synthetic fibers (for example, polyethylene, polypropylene, polyester, nylon, etc.), natural fibers (for example, cotton, linen, etc.), or composite materials thereof. Nonwoven fabric made of glass fiber, glass fiber, etc., and preferably non-woven fabric made of polyethylene, polypropylene, or polyester. The length of the liquid absorbent core 2b may be appropriately set in consideration of the length from the first opening 3 to the deepest part of the bottom 1b and the height protruding from the plug 2c.

  The plug portion 2c may be integrally configured as a part of the sheath 2a, or may be configured such that a member separate from the sheath 2a is bonded to the sheath 2a. In addition, as a structure necessary for sealing the first opening 3 with the liquid absorption part 2, for example, a groove, a protrusion, or the like may be provided in the first opening 3 and the plug part 2 c, respectively. . Furthermore, in order to facilitate the sealing of the first opening 3 by the liquid absorption part 2, the entire sheath 2a or the contact surface with the first opening 3 may be made of an elastic material, and the first opening The contact surface of the portion 3 with the plug portion 2c may be made of an elastic material.

  In addition, as above-mentioned, the liquid absorption part 2 may consist only of liquid absorption cores (FIGS. 6a-6c). In this case, the bait agent storage unit 9 includes a liquid absorption part 2 (liquid absorption core) that communicates between the inside and the outside of the bottle part 1 via the first opening 3 provided in the upper surface part 1a of the bottle part 1. 2b) should just be the structure which sucks up the aqueous bait agent accommodated in the inside of the bottle part 1 to the outward edge part of the bottle part 1. Moreover, this structure can also be said to be an aspect in which the stopper 2c constituting the liquid absorbing part 2 is integrally formed with the upper surface part 1a of the bottle part 1 regardless of the presence or absence of the sheath 2a (FIGS. 6b and 6d).

  The air-permeable liquid sealing portion 5 that seals the second opening 4 is not particularly limited in material and shape as long as it has air-permeability and does not allow water to pass through. In order to facilitate the configuration of the instrument 10, an upper surface portion 1a or a plug portion 2c of the bottle portion 1 is made of a material having both air permeability and waterproofness (for example, a film of fluorine-containing polyethylene resin) through an adhesive layer. The structure fixed to may be sufficient.

  Moreover, in order to avoid that the aqueous bait agent 6 of the bottle part 1 evaporates by the time of use of the control apparatus 10, the outer end part of the liquid absorption core 2b is used until the cap or seal which can be easily detached by the user is used. It is preferable that the liquid sealing portion 5 is covered.

  The control instrument according to the present invention may be provided in a form in which the bottle part, the liquid absorbing part, and the cover part are assembled at the time of use, and in that case, in the form of a kit together with the boric acid aqueous solution to be accommodated in the bottle part. Provided. Specifically, the present invention communicates between the inside and the outside of the bottle part via a bottle part for containing the aqueous bait agent and a first opening provided in the upper surface part of the bottle part. A liquid absorbing part that covers the upper part of the first opening and is locked with a gap between the bottle part and an aqueous boric acid solution to be accommodated in the bottle part as an aqueous bait agent, And a control device kit can be provided. In this case, the kit may include a bait agent storage portion in which a liquid absorption portion is attached to a bottle portion in which a boric acid aqueous solution is stored. Specifically, the present invention communicates between the inside and the outside of the bottle part via a bottle part for containing the aqueous bait agent and a first opening provided in the upper surface part of the bottle part. A bait agent storage portion provided with a liquid absorbing portion, a control device provided with a cover portion that covers the upper portion of the first opening and is locked with a gap between the bottle portion, and A control device kit containing an aqueous boric acid solution to be accommodated in the bottle part as an aqueous bait can be provided.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to this.

[Test 1: Relationship between boric acid concentration and efficacy]
A resin container (outer diameter 46 cm × 36 cm × height 15 cm) was prepared, and a paper waste was laid on the bottom surface of the resin container. As a hiding place for cockroaches, two corrugated paper shelters were stacked. A polycup lid (diameter 10 cm) was placed on the shelter, and absorbent cotton soaked in water was placed. In order to prevent escape, full-on was applied in advance to the inner side surface of the resin container.

  Twenty black cockroaches (10 males and 10 females) were released in a resin container, and the upper part of the resin container was covered with nylon goose and allowed to acclimate for about 24 hours. The day after release, one control device and one solid feed were placed inside the resin container.

  As shown in FIG. 1 and FIGS. 2a to 2c, the control device used in this test is configured to be covered with a cover portion from above the bait agent storage portion having a dome-like structure. The shortest distance from the lowermost edge of the edge part of the cover part to the bait agent storage part is set to 8 mm. The bait agent storage part has a 5 mm diameter micropore in the upper part of a bottle part (maximum capacity 60 mL) having a diameter of 74 mm at the bottom and a maximum height of 37 mm at the upper part. After the bait agent is injected, it is formed by pushing the liquid absorption part from the micro hole to the bottom part to the bottom part. A polypropylene nonwoven fabric was used for the liquid absorption core of the liquid absorption part.

  30 mL each of bait agents a1 to a3 were accommodated in different control devices, and each was subjected to an efficacy test. For the bait agent a1, 2 g of boric acid (Kanto Chemical Co., Ltd., reagent grade) and 10 g of sucrose (Kanto Chemical) were placed in a glass bottle, and ion-exchanged water was added until the total amount reached 100 g, and the solute was dissolved by stirring. Bait agent a2 and bait agent a3 were prepared in the same manner as bait agent a1 except that the amount of boric acid was changed to 3 g and 4 g, respectively.

  Seven days after the control device was placed, the number of dead insects in the resin container was examined, and the calculated death rate was shown below. During the test period, the temperature inside the resin container was maintained at about 25 ° C. The treatment group was repeated twice, and the non-treatment group was repeated once.

[Test 2: Relationship between sugar concentration and efficacy]
3% by weight boric acid aqueous solution (bait agent b1), 3% by weight boric acid and 10% by weight sucrose aqueous solution (bait agent b2), 3% by weight boric acid and 20% by weight sucrose aqueous solution (bait agent b3), An aqueous solution of 3% by mass boric acid and 40% by mass sucrose (bait agent b4) was prepared according to the procedure described above, and 30 mL of each was accommodated in a different control instrument, and subjected to the efficacy test in the same manner as in Test 1.

  The mortality rate 7 days after the placement of the control device is shown below.

[Test 3: Relationship between sugar concentration and viscosity]
Aqueous solutions having a boric acid concentration of 3 mass% and a sucrose concentration of 0 mass%, 2.5 mass%, 5 mass%, 7.5 mass%, 20 mass% or 30 mass% (bait agents c1 to c6, respectively) ) Was prepared according to the procedure described above and the viscosity of the bait agent was measured. A B-type viscometer (RB-85L type, rotor No. 1) manufactured by Toki Sangyo Co., Ltd. was used as a measuring instrument, and the measurement conditions were 25 ° C., 60 rotations, and 50 seconds.

[Test 4: Freezing of solution in bait container]
The boric acid concentration is 3% by mass and the sucrose concentration is 0% by mass, 2.5% by mass, 5% by mass, 7.5% by mass, 10% by mass, 15% by mass, 20% by mass, 30% by mass or 40% by mass of aqueous solutions (bait agents d1 to d9, respectively) were prepared according to the procedure described above, and 30 mL each was stored in the control device with the cover part removed, and the control device sealed with parafilm was kept at −5 ° C. in a freezer. The frozen state of the bait preparation when stored for 3 days was examined (+; frozen, −; not frozen).

[Test 5: Relationship between sugar concentration and clogging in liquid absorbent core]
3% by weight boric acid and 10% by weight sucrose aqueous solution (bait agent e1), 3% by weight boric acid and 20% by weight sucrose aqueous solution (bait agent e2), 3% by weight boric acid and 30% by weight sucrose Aqueous solution (bait agent e3), 3% boric acid and 40% sucrose aqueous solution (bait agent e4), 5% boric acid and 10% sucrose aqueous solution (bait agent e5) according to the procedure described above. Prepare and store 30 mL each in a control instrument with the cover removed, and measure the change in weight of the bait agent over time when the control instrument is left at room temperature, and the amount of water transpiration from 4 days to 7 days later Was calculated.

  It is thought that clogging occurred due to crystallization of boric acid in the liquid absorption core, thereby suppressing water evaporation.

[Test 6:]
2 mass% boric acid and 10 mass% sucrose aqueous solution (bait agent f1), 3 mass% boric acid and 10 mass% sucrose aqueous solution (bait agent f2), 3 mass% boric acid, 3 mass% borax and An aqueous solution of 10% by mass sucrose (bait agent f3) was prepared according to the procedure described above, and 30 mL of each was housed in a different control device, and subjected to an efficacy test in the same manner as in Test 1.

  The mortality rate after 4 days and 7 days after placement of the control device is shown below.

  By using the present invention, it is possible to safely and efficiently control reticulate insects such as cockroaches that are dwarf sanitary pests.

DESCRIPTION OF SYMBOLS 1 Bottle part 1a Upper surface part 1b Bottom part 1c End part 2 Liquid absorption part 2a Sheath 2b Liquid absorption core 2c Plug part 3 1st opening part (micropore)
4 Second opening 5 Liquid sealing part 6 Aqueous bait agent (boric acid aqueous solution)
7 Cover part 7a Locking part 7b Convex part 7c End part (concave part)
8 Intrusion port 9 Bait agent storage 10 Control device

Claims (12)

A bottle part containing an aqueous bait agent and a liquid absorbing part communicating between the inside and the outside of the bottle part via a first opening provided on the upper surface part of the bottle part were provided. Bait agent storage, and
A cover portion that covers the top of the first opening and is locked with a gap between the bottle portion,
A pest control device, wherein the aqueous bait agent is an aqueous boric acid solution.   The pest control device according to claim 1, wherein the application target of the aqueous bait agent is a dwarf sanitary pest belonging to the reticulate.   The pest control device according to claim 1 or 2, wherein when the cover part partially covers the upper surface part, a distance from an end of the cover part to the upper surface part is 6.5 mm or more. .   The pest control apparatus according to claim 1 or 2, wherein when the cover part covers the entire surface of the upper surface part, a distance from an end of the upper surface part to the cover part is 6.5 mm or more. A second opening is provided in the upper surface of the bottle,
The pest control according to any one of claims 1 to 4, wherein a gas-permeable liquid sealing portion for sealing a liquid inside the bottle portion covers the second opening. Instruments.   The pest control device according to any one of claims 1 to 5, wherein the boric acid aqueous solution does not contain borax.   The liquid-absorbing part has a liquid-absorbing wick and a sheath that wraps the liquid-absorbing wick so as to keep the contact area between the liquid-absorbing wick and the aqueous bait agent constant. The pest control device according to any one of the above.   The pest control device according to claim 7, wherein a plug portion that is in close contact with a first opening provided in an upper surface portion of the bottle portion is formed at an end portion of the sheath. A second opening is provided in the stopper of the bottle,
The pest control device according to claim 8, wherein a breathable liquid sealing portion for sealing a liquid inside the bottle portion covers the second opening.   An aqueous bait for controlling reticulate insects, comprising 1 to 5% by mass of boric acid.   The aqueous bait preparation according to claim 10, further comprising one or more sugars selected from the group consisting of glucose, fructose, sucrose, and maltose.   The aqueous bait preparation according to claim 10 or 11, wherein the viscosity measured with a B-type viscometer is in the range of 2.8 to 4 mPa · s.

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