JPH0699241B2 - Pest repellent method and insect repellent material - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention provides a means for repelling pests from invading and contacting a place where it is desired to prevent them from approaching. The purpose is to sustain the effect.

[0002]

2. Description of the Related Art Cockroaches, chafers, and the like cause food damage and pose a sanitary problem as vectors of pathogenic bacteria and mold. Therefore, in order to prevent damages caused by these pests, conventionally, the following means have been generally adopted. ○ 1 The insecticide is sprayed directly on the pests to kill and destroy the target pests. ○ 2 Spray or apply the repellent or insect repellent as it is or the resin containing the repellent or insect repellent on the entire surface. ○ 3 Place the one coated with adhesive on the surface to catch the pests. ○ 4 Energize electricity to prevent intrusion.

[0003]

Among the above-mentioned conventional insect repellent means, the method of directly spraying the ○ 1 insecticide to the pests is to kill the insects by contaminating the surrounding food or tableware or contacting the human body. There is a risk and there is a problem in terms of safety. The method of spraying or applying the repellent or insect repellent on the whole surface of ○ 2 is not economical because it requires a large amount of the drug, and the effect is not sufficient even if the resin contains the components. Further, the method using the ◯ 3 adhesive is filthy from the outside, because the captured pests are still attached to the pests, and they are also contaminated with dust or the like. ○ 4 The method of preventing invasion of pests by energizing not only requires wiring work and labor, but also it is difficult to take measures against power failure, and there is also concern about safety due to the possibility of electric leakage, short circuit, etc. There is.

[0004]

[Means for Solving the Problems] In the past, when aiming at insect repellent, in general, the opportunity for contact between the drug and the insect pest has been provided in order to exert the effect by allowing the insect pest to properly absorb the components of the insecticide or insect repellent. The method of making as many as possible was adopted. Specifically, the drug has been applied to the entire surface of the pest passage and the action area without any gaps, and the pests have been arranged so that as many drug components as possible can be taken into the body at the place where the pest walks.

However, the inventors of the present invention have paid attention to the fact that it is basically necessary to change the way of thinking in order to avoid pests, and as a result of diligent research, a place where pests cannot enter or approach is problematic. Further, by arranging pest repellent components at intervals in and around the present invention, the inventors have invented a method and a pest repellent material capable of maintaining the pest repellent effect for a long period of time even with a small amount of a drug.

A feature of the pest repellent method according to the present invention is that the components repelled by the pests are dispersed and arranged at a concentration not lower than the threshold value for causing the pests to have a repellent reaction and at intervals of not more than the average body length of the pests. .

The insect repellent material according to the present invention is characterized in that the component repellent by the pests is present on all or part of the surface at a concentration not lower than the threshold value at which the repellent reaction is caused by the pests and not more than the average body length of the pests. That is, they are dispersed and arranged at intervals of.

[0008]

[Action] In order to prevent the pests from approaching the target, it is sufficient that the repellent component is present at a concentration higher than the threshold value that causes the repellent reaction to the pests, and it is not necessary to incorporate it into the pests like an insecticide. Absent. In the present invention, since the pest repellent component is not widely and thinly applied over the entire range of action of the pest as in the past, it is dispersed and arranged at intervals equal to or less than the average body length of the pest, so that it is more economically effective than conventional. You can improve your sex. That is, by providing a region where the repellent component does not exist, even if the concentration per unit area is the same, it is possible to increase the concentration at the location where the repellent component exists. Thus, it is possible to reliably prevent the pests from approaching for a long period of time.

[0009]

EXAMPLES As the pest repellent component used in the present invention, commercially available repellent and repellent components can be used, and examples thereof include diethyltoluamide, menthol, hinoki oil, cedar oil, hiba oil, 2,3,4,5-. Common examples include bis (Δ ₂ butylene) tetrahydrofurfural, di-normalpropyl isocinchomeronate, pyrethrins, synthetic pyrethrins (phthalthrin, allethrin, permethrin, phenothrin, etopheneprox, bifenthrin, etc.), but not limited to these. It is not something that will be done. Further, it does not prevent the use of a mixture of two or more of these. The amount of repellent component used per unit area depends on the type of pest to be repelled and the type of repellent component used.
Set to be the most economical.

It should be noted that the repellent component permeates the location,
To prevent it from spilling or volatilizing,
If necessary, mix the repellent component with a resin or holding carrier,
The repellent component may be placed in one place. Furthermore, it is also possible to add a potency enhancer or a fragrance.

The interval at which the pest repellent components are dispersed and arranged is set to be equal to or less than the average body length of the pests to be repelled. For example, when targeting cockroaches, two representative types are German cockroaches and black cockroaches. In the former German cockroach, the average body length of adults is about 13 mm, and in the latter black cockroach, it is about 27 mm, so both are targeted. Then, the arrangement interval of the pest repellent component is set to 13 mm or less. However, if only the black cockroach is targeted, the average body length of the adult is about 50 mm including the tactile sense, and therefore the arrangement interval of the pest repellent component may be set to about 50 mm. When the first-instar larva of the cockroach is also included in the repellent target, its body length is about 5 mm, and thus the interval of placement of the repellent component may be shorter than that. However, it is desirable to set the interval to at least 2 mm or more for the purpose of increasing the component concentration. As a matter of course, these arrangement intervals may be appropriately selected according to the kind of the pest to be repelled.

Depending on the method of arranging the repellent component, a trace amount of the component may be attached to the area where the repellent component is not planned to be arranged, which is of course included in the present invention.

In carrying out the present invention, the repellent component may be dispersed and arranged in an area where it is desired to avoid the invasion and contact of harmful insects. When the interior of a house is constructed or furniture or other furniture is manufactured by using the same, the user can obtain the pest repellent effect without performing a chemical application work.

The insect repellent material according to the present invention is a material in which pest repellent components are dispersed and arranged on the surface of a material for interior of a house or a material for manufacturing furniture. Specifically, the pest repellent component is applied to the surface of wood board, square wood, plywood, decorative plywood, organic or inorganic board material, etc. by means of coating or the like, linear, dotted line, mesh, grid, These are arranged in appropriate intervals such as spots.

The region in which the repellent component is dispersedly arranged may be the entire surface of the insect repellent material or may be limited to a part of the surface, for example, only the peripheral portion. Furthermore, in order to increase the persistence of the repellent effect, instead of simply applying, as shown in FIGS. 1 and 2, recesses such as grooves 20 and holes 30 are provided on the surface of the material 10 of the insect repellent material, and the pest repellent component is placed there. It is also possible to embed 1.

The insect repellent material treated in this manner is used in a kitchen,
By using it as a building material for home interiors such as living rooms and bedrooms, or as a chest, cupboard, bed, vanity,
By using it as a furniture such as a kitchen cabinet or a constituent material of a furniture, invasion and approach of harmful insects can be prevented for a long period of time.

Hereinafter, test examples conducted according to the present invention will be described. (Test Example 1) An interior decorative plywood having a surface size of 150 × 150 mm was prepared, and each pest repellent component listed in Table 1 was applied to the surface so that the applied amount per unit area (g / m ² ) became equal. A coating applied according to the method of the present invention, a coating applied to the entire surface as a conventional example, and an untreated coating as a control are prepared. The application mode of the repellent component based on the method of the present invention is shown in FIG. (A) to (G) of FIG.
Correspond to trial numbers 1a to 7a in Table 1, respectively. Further, in each drawing, 1 represents a repellent component. When applying the pest repellent component, appropriate treatment such as dilution was applied according to the properties of the drug.

The test method is as follows. Each test piece prepared as described above and the untreated control piece are placed at intervals in a cylindrical container (diameter 750 mm, height 180 mm) whose inner wall surface is coated with petrolatum. Then, a shelter for test insects (plane size 135 x 200
(mm), the test insect (imago of German cockroach) is released into the container, and the number of test insects latent under the shelter of each test piece after a certain period of time is counted.
The repellency rate was calculated based on the following formula. Repelling rate (%) = {(latency number of untreated piece)-(latency number of test piece)} / (latency number of untreated piece) × 100

The test results are shown in Table 1. In the table, trial number 3
The cinethrin used in a and 3b is N- (2-ethylhexyl) -bicyclo [2,2,1] -hepta-5ene-2,3-dicarboximide, and trial number 5
S-421 used in a and 5b is octachlorodipropyl ether, and R-11 used in trial numbers 6a and 6b is 2,3,4,5-bis (Δ ₂ butylene). It is tetrahydrofurfural.

[0020]

[Table 1]

As can be seen from the data in Table 1, the test pieces subjected to the method of the present invention show a remarkably higher repellency than the test pieces of the conventional example applied to the entire surface. Moreover, one day after application, the superiority and inferiority of the repellent effect appeared between the present invention and the conventional example, and in particular, the persistence of the effect was confirmed by comparing the repellent rates after 3 months and 6 months. It is understood that the invention is far superior.

Test Example 2 In Test Example 2, the difference in repelling rate between when the arrangement interval of the repellent components is set to be less than or equal to the average body length of the pest and when it is set to be larger than the average body length is examined. is there. In the test, adult black cockroach adults (average body length including tactile length: about 50 mm) were used as test insects,
Plane dimensions of 270 x 150 m as a shelter for test insects
The test method and the method of calculating the repellency rate are the same as in Test Example 1 except that the test piece of m. The results are shown in Table 2.

[0023]

[Table 2]

As is clear from Table 2, those in which the arrangement interval of the repellent components was set to be equal to or less than the average body length (50 mm) of the adult black cockroach exhibited an excellent repellent rate, and the arrangement interval of the repellent components was determined from the average body length. Those with a large setting have a very poor repellent rate. From this, in order to obtain an excellent repellent effect, it is necessary to set the arrangement interval of the repellent component to be equal to or less than the average body length of the target pest, and when set in such a manner, compared to the conventional case, It turns out that it exerts an excellent effect.

[0025]

As is clear from the above description, according to the present invention, even if the repellent component is used in the same amount per unit area, it is possible to disperse the repellent component in comparison with the conventional whole surface coating. In addition, it is possible to obtain a remarkably excellent repellent effect, and the sustainability of the effect is far better than in the past. That is, the present invention brings about an unexpected and remarkable improvement in the repellent effect by changing the arrangement mode of the repellent component.

In addition, the present invention is particularly economical because it can reduce the amount of expensive chemicals to be used because the repellent effect exerted is remarkable even with the same amount of repellent component as the conventional one.

[Brief description of drawings]

1A and 1B show an embodiment of an insect repellent material according to the present invention, in which FIG. 1A is a plan view showing a part thereof, and FIG.

2A and 2B show another embodiment of the insect repellent material according to the present invention, in which FIG. 2A is a plan view showing a part thereof, and FIG.

FIG. 3 shows the arrangement of repellent components based on the method of the present invention, which corresponds to trial numbers 1a to 7a listed in Table 1.

[Explanation of symbols]

 1 ... Repellent component 10 ... Insect repellent material 20 ... Groove 30 ... Hole

Claims (2)

[Claims] 1. A pest repellent method comprising disposing a component repelled by a pest at a concentration equal to or higher than a threshold value at which a pest causes a repellent reaction, with an interval not larger than the average body length of the pest dispersed. 2. A composition in which a pest-repelling component is dispersed and arranged on all or part of the surface at a concentration equal to or higher than a threshold value for causing a pest-repelling reaction to occur and at intervals of not more than the average pest length of the pest. Characteristic insect repellent material.