FR2680950A1 - Means for destroying harmful rodents with the aid of toxic products - Google Patents

Abstract

Means for destroying harmful rodents with the aid of toxic products, these means comprising containers (1), compositions of material or/and their arrangement (4) preventing the dispersal of the product.

Description

 The invention relates to the destruction of harmful rodents; it relates to new means for the application of toxic products for these animals.

The means targeted by this invention include in particular containers, compositions of matter and / or their arrangement.

 The fight against rodents, especially rats and mice, is very old and still as current, because their rapid reproduction obliges man to a continuous action against these murids. After various poison formulas, used in the past, anticoagulants are used today which, on the whole, give good results. These substances are incorporated into baits such as seeds, broken grains or cereal powders, which are placed in places frequented by rodents. The seeds are consumed directly, while the powder, put especially in narrow passages, sticks to the hairs of the animal which then absorbs it by licking itself.

 The application of the product by the user is made in arbitrary quantities and one cannot know how much was consumed by the animals and how much was scattered by their passage. It is therefore generally unknown whether the dose of toxic was sufficient or not; in reality the destruction yield leaves something to be desired.

 The present invention provides new means, ensuring maximum destruction of murids, a clear indication of the amount of product really consumed and cleanliness of the places where the treatment is carried out. These advantages are obtained by means avoiding the scattering of the product from its point of application.

 The means according to the invention consist of containers, packaging or / and compositions putting the toxic product in a coherent form in one or more unit doses, to be placed on the supposed passage of rodents.

 In a preferred form of the invention, the dose or doses of product are provided with means for fixing to the ground and / or to a wall, so as to prevent their entrainment by animals. Thus, the inspection of these doses, after determined times, allows the user to see exactly if the quantity of product was sufficient and - if necessary - to add, to complete the destruction of the murids.

 According to a first embodiment of the invention, the application means consist of a box containing the product; the box is metallic, wooden, plastic, glass, or any other suitable material. It can be opened, but - for better conservation and for the precision of the quantity of product - it is good that the box has a lid, this is removed just when the dose is put in place; preferably the cover is of the tear-off type, so that it can no longer be replaced after opening the box.

 When the box is made of wood, thin plastic or any other material that rodents easily pierce, the opening becomes useless; it is then possible to make available to animals the product fully enclosed in its box or packaging. The product can, for example, be completely surrounded by a relatively thin plastic sheet. or cloth, or or greasy or waxed paper. This provides an extra precaution against domestic animals, which in general do not bite in such packages.

 In all cases, preferably, the box or the packaging of the toxic product carries the fixing means mentioned above: in particular, these means consist of an adhesive strip, protected by a removable film, in the known manner, or well by one or more points, usable as are "thumbtacks".

The adhesive strip is integral with the external face of the bottom of the dose, it makes it possible to stick the latter to the ground, after removal of the protective film. As for the "pushpin", it is preferably fixed to a tab forming part of the bottom and / or of the side wall of the box or of the packaging; its point is driven into the floor or into a wall or beam of the place of application of the product. Another way is to use a hook.

 The containers or packaging according to the invention may contain the toxic product in pieces, grains, broken or / and powder; however, in a preferred embodiment, the dose is presented in a continuous mass, solid or semi-solid, which makes it possible to better avoid its scattering by overly greedy animals. In this case, the constituent materials of the product, in particular whole or / and crushed cereal grains, are agglomerated with a binder and molded in desired doses, which can have the shape of parallelepipeds, cylinders, balls, plates, sticks etc. and, in particular, the shape of the box in which the mass is molded.

 Thus, a box, filled with a solid or semi-solid mass, continuous, of toxic product, formed with an appropriate binder, the box being able to be opened irreversibly and provided with means of fixing to the ground or to the walls or walls, constitutes a particularly effective embodiment of the present invention.

 The solid or pasty mass product can be obtained by the agglomeration of nutritious grains, broken grains and / or powder with an organic binder, for example protein gel, polysaccharide, polyvinyl alcohol, polyvinyl-pyrrolidone, polyacrylamide, alginates, fatty substances. such as stearin etc. The masses obtained can be used as they are in places protected from rain and excessive humidity. They are covered with a thin envelope of plastic, polyethylene or other, which the muridae easily pierce, when it is necessary to protect the doses from humidity.

 In all cases, naked or covered, the doses preferably carry the fixing means described above, which avoid their entrainment by the animals.

Thus bonding strips, spikes carrying brackets or hooks are attached to the toxic mass itself. For example, one or more tabs of plastic, metal or fabric sheet are embedded in the agglomerated mass which they protrude by a few centimeters; the protruding part of the tongue is used for fixing to the ground or hanging from a wall or a beam; the ability of murids to climb on a surface, even a vertical one, makes it possible to fix the dose high enough above the ground, where domestic animals cannot reach it.

 Some of the embodiments of the invention are illustrated without limitation by the accompanying drawings.

 Fig. 1 shows in perspective a metallic, round, closed box, loaded with rodenticide.

 Fig. 2 is, in plan view, the outer face of the bottom of the box according to FIG. 1, provided with fixing means by gluing.

 Fig. 3 shows a dose of toxic product agglomerated with a binder, carrying a fixing tab partially embedded in the agglomerated mass.

 Fig. 4 represents a dose of rodenticide, on which a sticky strip is fixed.

 Fig. 5 illustrates the case where a fixing strip, taken from the agglomerated mass, exceeds the latter on two sides.

 Fig. 6 corresponds to the case where a toxic dose holds in its mass a means of its suspension.

 Fig. 7 represents a box of the principle of that of FIG. 1, but open, two rodents being devouring the contents.

 In Fig. 1 we see, in the upper face of the box 1, the ring 2 allowing the opening of the box by tearing off the cover 3, in the known manner; the opening is irreversible. The bottom of the box carries a sticky strip 4, protected by a film which is removed to adhere the strip 4 to the ground or other support, when the box is put into service.

This contains the toxic product in grains, pieces, broken pieces and / or powder, or in an agglomerated state.

 The dose of product 5, Fig. 3, is an agglomerate of cereals with a binder such as gelatin, agar-agar, sephadex, dextran, polyvinyl alcohol, polyoxyethylene etc., containing 0.01 to 0.05% of anticoagulant, 5 to 15% of sucrose and a Vitamin K2 at about 0.001%. An aluminum strip 6, taken in the mass during the molding of the chipboard 5, makes it possible to fix the dose to the ground, to the wall or to a beam, by gluing, by means of a point or by hook.

 Fig. 4 shows a dose 5 of the type similar to that of FIG. 3, one of the faces of which carries, firmly adhering, a sticky strip 7 normally protected by a film which is removed, when the dose is put into service, to press the strip 7 against the support to which the dose is to be glued.

 In Fig. 5 we see a metal strip, reinforced plastic or reinforced fabric 8 - 8 'which, taken in the agglomerated mass 5, crosses it right through; by fixing the two emerging legs 8 and 8 ′ to the desired support, horizontal, vertical or inclined, the dose 5 is guaranteed to be very stable, particularly useful when large rats are present.

 Fig. 6 illustrates an embodiment of the invention provided for the vertical suspension of a dose 9, by means of a rod 10 embedded in the mass 9, ending in a ring or hook 11. This is a variant which is well suited the fight against harmful rodents in farm buildings, stables, attics, etc.

 The agglomerated masses of the type of those represented in FIGS. 3 to 6, in 5 or 9, are used as such, naked, when the atmosphere of the place of employment allows; they are covered with a protective envelope, but capable of being pierced by murids which do not hesitate to bite into sheets of plastic, cellulose, fatty paper, wood, stearin and the like. Of course, the adhesive strip 7 is then on the protective envelope; preferably the envelope is bonded to the ground to the right of this strip. As for the legs or tongues 6, 8, 8 'and the rod 10, they can emerge from the envelope or be covered by it as well.

 Fig. 7 shows a metal box 12 of a shape different from that of FIG. 1, but whose irreversible opening is done in the same way. The box, a real feeder for harmful rodents, contains the bait 13 with the toxic product, consisting for example of cereals. This content of the box 12, known per se, can advantageously be replaced by an agglomerated mass of the type of those mentioned above with regard to the dose 5 FIG. 3. Thus, even with the most restless rodents, any scattering of the bait is avoided.

The nonlimiting examples which follow indicate some formulas for the preparation of products.
toxic usable in the context of the present invention.

EXAMPLE 1
Composition of a toxic bait intended to be loaded in special boxes according to Fig. 1 and 7 of the corn but crushed into pieces of about 0.15 to 3 mm whose particle content of less than 0.25 mm is about 20%. It incorporates 0.006% of vitamin Ksi, 10% of sucrose, 0.1% of anise extract and 0.03% of anticoagulant known in the trade under the name of "COUMAFENE".

 Boxes containing 50, 100 and 200 g of this product are thus prepared.

EXAMPLE 2
Dose of agglomerated product.

 A gel of 50 g of gelatin is prepared hot with 100 g of water; after cooling to below 400C, 50g of the bait mixture from Example 1 and 0.2 g of methyl para-hydroxybenzoate are added to it. The whole is kneaded and molded to the desired shape, then left to dry superficially.

EXAMPLE 3
The agglomerate of Example 2, without drying, is introduced and compressed into a box of the type of FIG. 1 which is then hermetically closed.

EXAMPLE 4
An agglomerate according to Example 2 is molded into a parallelepiped of dimensions 60 x 60 x 28 mm, an aluminum strip 120 mm long, 20 mm wide and 1 mm thick having previously been embedded in the mass , as shown in Fig. 5. Each of the metal tabs extending beyond the chipboard carries an orifice for the passage of a fixing point.

EXAMPLE 5
The dose according to example 4 is covered with a sheet of polyethylene shrunk in the known manner.

EXAMPLE 6
A mixture of broken corn with 45% corn, 35% barley and 20% soybeans, added with 8% raw beet sugar, 0.025% anticoagulant and 100 ppm arethol, is mixed with an aqueous gel of polyvinyl-pyrrolidone at 30%, at a rate of 35 g of gel per 100 g of broken pieces. A cylindrical stick 26 mm in diameter, 100 mm high, is molded in this mixture, a rod, terminated by a hook, having been previously inserted therein as shown in FIG. 6. The stick is hung on the wall of an attic.

EXAMPLE 7
The stick of example 6 is covered with fatty paper, stearinized, tight on the dose; it is hung vertically on a damp attic wall.

EXAMPLE 8
A dose similar to that of FIG. 3 is obtained according to the formula of Example 2 with Agar-Agar instead of gelatin.

EXAMPLE 9
The dose according to Example 8 is covered with a cellulosic film by immersion in a colloidal, aqueous solution, at 10% of methyl cellulose, draining, then drying until hardening of the film formed.

EXAMPLE 10
A dose similar to that of Example 6 is prepared with replacement of the aqueous polyvinylpyrrolidone gel with the same proportion of aqueous gel with 42% sodium alginate.

EXAMPLE 11
A doselobt obtained according to Example 2, is immersed in an alcoholic solution containing 7% of stearin; after removal of the solution, the dose is dried. The thin film of stearin formed on its surface is enough to protect it from moisture.

Claims (6)

REVESDICATIQNS  1.- Means for destroying rodents with acronyms using toxic products, characterized in that, these products being placed in a container or / gt in the form of a coherent composition, not dispersed, the container or the composition is provided with a device for fixing it to the ground and / or to a wall,  2.- Means according to claim l, characterized in that the product is in one or more unit doses, well determined.  fixed in a place frequented by murids.  a box containing the toxic product, intended to be  cédentes, characterized in that they consist of  3, .- Means according to one of the pre claims  4 .- Means according to claim 3, cons  sealed by a box made of materials inviolable by the muri  dice, in particular metallic, hermetically closed,  to be opened irreversibly at the time of its implementation  service.  5.- Means according to claim 3 ;, charac  that the box is made of a material that can be eaten away by  murids, in particular of wood or plas  not very thick tick, the box being without openings.  6 .- Means according to one of claims 1 pu  2, characterized in that they are constituted by a chipboard  poisoned by toxic product with gnawing gel by muri  dice.  toxic stance and sugar, linked using an aqueous, organic gel, in particular protein, polysaccharide, polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylamide, alginate or by a fatty substance, in particular stearin.  sour cereals and / or cereal powder  laughed in that the agglomerate is formed by grains, bri  w .- Means according to claim, character-  & Means according to claim 6 out, characterized in that the agglomerate is covered with a protective envelope, capable of being pierced by murids, in particular sheet of plastic material, of cellulose, of paper or fatty tissue, or the stearine.  9. - Means according to one of the preceding claims, characterized in that they are provided with a sticky strip protected by a removable film, and / or with one or more lugs or rods which can be fixed to a support by point or hook.