RU2657745C1 - Rodenticidal bait - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: present invention relates to means for combating harmful rodents and is intended for deratization of agricultural and industrial premises and in open nature. Rodenticidal bait includes active actual substance – brodifacoum, cereal basis with flavoring food additives, attractants, repellents for humans and domestic animals. Rodenticidal bait is made in the form of agglomerated granules (clumps of irregular shape) with the application of a coated protective shell (dragee-made) a coating containing crushed natural mineral components and flavoring agents in edible glue binders as attractants. Cereal base includes ground wheat grains, and/or oats, and/or barley. Mineral components are fen peat, quartz sand and bentonite. Product has an acceptable mechanical strength.

EFFECT: proposed rodenticidal bait possesses considerable eating and, consequently, increased effectiveness of deratization with a relative decrease in the content of the poison agent, due to which environmentally safer.

9 cl

Description

The invention relates to rodenticidal agglomerated baits - edible compositions attractive for harmful rodents (especially rats and mice), intended for their destruction, using as rodenticide in agricultural and industrial buildings, in public utilities and in transport, in open nature.

The extermination (deratization) of animal pests that cause economic damage to the economy and are sources and carriers of infectious diseases includes a number of measures aimed at protecting public health, protecting crops, food and property. One of these measures is the fight against animal pests through poisoned baits, which are used, as a rule, in conjunction with other methods of control. As practice has shown, the constant presence of baits, even with the apparent absence of rodents, helps to eliminate random migrants. However, in order to successfully and safely use poisonous baits to prevent contact with the bait of domestic animals and humans, specially prepared rodenticides of a certain composition and appearance are used.

Known:

a composition that includes in a predetermined ratio (wt.%) a feed base with additives and an anticoagulant rodenticide, in which brodifacum or chlorfacinone (0.006-0.05) are used as rodenticide, and pea flour is used as a feed base (59.65- 88,744) with additional components: food sugar (8-30) to increase the eatability of the bait, table salt (0.25-3), which acts as a preservative, sunflower oil (3-10), which protects from the destructive effects of moisture and improves the eatability of the bait, while the composition is made in the form of gra Str cylinder-shaped section 2 mm and length 7-15 mm [RF patent №2029470 the invention "Composition for combating water vole Arvicola Terrestis L», publ. 02/27/1995, IPC A01N 25/00, A61K 31/00];

rodenticidal bait, containing in a predetermined ratio, a cereal base with additives, rodenticide, a water-soluble film-forming binder and an additional coloring agent and preservative, in which rodenticide is brodifacum, diphethalion, flocumafen, bromadiolone, warfarin, cholecalciferol, chlorfacinone, diphenone, diphenone, diphenone, diphenone moreover, one or more rodenticides are used, and the food base is ground cereal of wheat, barley, corn, sorghum, oats, rice or millet, additives, taste enhancers are sweetener, animal oil, vegetable oil or yeast, the water-soluble film-forming binder is cellulose ether, starch, polyvinyl alcohol, polyvinylpyrrolidone, carrageenan, gelatin, gum, tragacanth, pectin or polyacrylate, while it has rodenticide granules ranging in size from 0.20 to 10 mm [RF Patent No. 2141759 for the invention "Rodenticidal bait and method for its preparation", publ. 11/27/1999, IPC A01N 25/00].

Known baits have certain drawbacks, in particular, relatively low attractiveness, since the poisonous rodenticide is located in the entire volume of the granules, including their surface, which can scare away and force rodents to refuse to eat them, making the effect of the bait not effective enough, and the granules are prone to destruction storage.

Known granular bait for extermination of rodents, consisting of a food base with attractant and rodenticide, which is used potassium permanganate, iron sulfide or calcium carbide as each of them separately, and their mixture in any combination with each other, while the ratio of the amount of food base together with the attractant, the amount of rodenticide is 3: 1, the food base with the attractant and the substances of rodenticide introduced into it are placed in capsules in layers, each capsule of the bait is provided with a shell of food th base with attractant and has the shape of a cube, sphere, cylinder, or ellipsoid of 5-10 mm [RF patent №2449536 the invention "granular bait for killing rodents", publ. 05/10/2012, IPC A01M 25/00, A01P 11/00, A01N 25/12].

A significant drawback of such a well-known bait is the use of relatively weakly toxic rodenticites and the absence of repellents to prevent threats - protecting humans and domestic animals.

Known rodenticidal agent, including the active active ingredient, attractant, dye, repellent and a binder component, taken in the following ratio, wt.%: Active substance 0.002-10; attractant 40-85; dye 0.005-0.05; repellent 0.001-02; the binder is the rest, and the active active substance is selected from a number of rodenticides zinc phosphide, diphenylalone, megestrol acetate or bromodialion, grain, rice husk or bone meal are used as attractant, chromophthal red 2030 or EA33 is used as a dye, bitrex or denatorium saccharide is used as a repellent , the binder component is adopted from a number of thermoplastics: high strength polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamide or a copolymer of ethylene and vinyl acetate, the mixture in the manufacture of rodenticidal the product is subjected to heat treatment and subsequent heat molding by tabletting (briquetting) into cylindrical granules with a diameter of 5 mm and a length of 15 mm [RF Patent No. 2289925 for the invention of “Rodenticide,” publ. 12/27/2006, IPC A01N 25/10, А01Р 11/00].

The well-known rodenticidal agent adopted as a prototype, although it contains a rather active rodenticide and has sufficient mechanical strength, has certain disadvantages: cylindrical granules of geometrically regular and practically identical tablet form and mass in each case with a smooth and uniform surface are less attractive to rodents than agglomerated bait with a rough and uneven shape; the repellent repellent and enticing attractant are introduced into the mixture with the active active ingredient and the binder component directly into the food base and are concentrated there, thus, the surface layer of granules is covered with a binding thermoplastic, depleted and repelling repellent and attracting attractant, as a result, the rodenticidal agent is less attractive for rodents; the component indicated as an attractant in fact is not so much as a substance that attracts (entices), but the usual food dressing of grain, rice husk or bone meal.

The present invention is based on the solution of the task of creating a rodenticidal bait, which would provide an active effect on harmful rodents while reducing the possibility of harmful effects on humans and domestic animals, as well as increasing the attractiveness of rodenticidal bait for rodents.

The task and technical result are achieved by creating a rodenticidal bait from agglomerated granules containing a cereal base with flavoring food additives and an active substance - brodifacum, attractants, which have a colored protective coating with a binder - a coating with repellent for humans and pets, and the protective coating - the coating is made in the form of dragees using natural mineral components, including lowland peat, quartz sand, bentonite, and food att Ractants, food additives of the cereal base include dried fruits and vegetables and optionally peanuts or sunflower seeds, while the rodenticidal bait contains components in the following ratio, wt.%:

active substance 0.0015 cereal base with food flavoring 33 dye 0.05 repellent 0.01 binders 1.05 attractants 10.3 bentonite one natural and mineral constituents the rest is up to 100.

The cereal base of such a rodenticidal bait preferably contains grinding or whole grains of wheat, and / or oats, and / or barley, dried carrots and / or apples and, in addition, peanuts and / or sunflower seeds as food flavoring additives, which improves palatability (eatability) . Agglomerated granules (lumps) with roughnesses and irregularities in shape, made, for example, by mechanical mixing of the cereal base and flavoring additives coated with the active ingredient, are more attractive to rodents than smooth and uniform tableted baits that are known to be of regular shape. Moreover, in a protective coating coating made by dragging (layering) using a binder, preferably a product of the processing of wood pulp of CMC glue (sodium carboxymethyl cellulose) and a dextrin polysaccharide derivative derived from processing corn or potato starch and used in the food industry, in addition to food attractants, including peanut flour, sugar and salt in the accepted ratio of 1.67: 1.67: 1, made natural mineral components: crushed peat (lowland marsh), sand kvar central (river) and bentonite - such a representation of the rodenticidal bait significantly enhances the attractiveness for rodents. In addition, bentonite, which has water-absorbing and adsorbing properties, further contributes to the safety of agglomerated lumps. The presence in the protective shell of the rodenticidal bait of a noticeable color, preferably red-brown, using, for example, neutral dye Eosin N, and a repelling agent (repellent), using, for example, bitter denatonium benzoate (bitrex), prevents accidental use - contact with the bait human and domestic animals. In general, the increased attractiveness of the proposed rodenticidal bait for harmful rodents, primarily due to the “seductive” composition and contents of the dragee coating - the shell, allowed to significantly reduce, in terms of the total weight of the bait, in comparison with many analogues, the content of the active substance is Brodifacum (synonyms Clerat , Talon), of the structural formula [3- [3- (4'-Bromobiphenyl-4-yl) -3-hydroxy-1-phenylpropyl] -4-hydroxycoumarin], made the bait environmentally safer (class 4 - low-hazard substances). The ratio of the mass of the shell and the cereal base with food additives is (2 ÷ 3): 1, the shell is quite strong, can withstand a load of up to 600 g, while the agglomerated granules (lumps) of irregular shape have a length of the order of 8-11 mm along the longitudinal axis, in the transverse section about 4-7 mm.

Field tests on house mice and gray rats according to the standard alternative feeding technique with the possibility of choosing food (10 animals, 2-week exposure) showed a rather high efficiency of the proposed rodenticidal bait: the average eatability of the rats was 38% for the rats and for mice 11.2%; biological efficiency (death) was 100% for rats within 4-11 days and for mice for 5-15 days.

Claims (10)

1. Rodenticidal bait from agglomerated granules containing a cereal base with flavoring additives and the active ingredient is brodifacum, attractants having a colored protective coating-coating with repellent for humans and pets using a binder, characterized in that the protective coating-coating is made in the form of a dragee using natural mineral components, including lowland peat, quartz sand, bentonite, and food attractants, cereal flavorings include sushi s fruits and vegetables, wherein the rodenticide bait contains components in the following ratio, wt.%: active substance 0.0015 flavored cereal base 33 dye 0.05 repellent 0.01 binders 1.05 attractants 10.3 bentonite one natural and mineral constituents the rest is up to 100 2. Rodenticidal bait according to claim 1, characterized in that the cereal basis is grinding or whole grains of wheat, and / or oats, and / or barley. 3. Rodenticidal bait according to paragraphs. 1 and 2, characterized in that as a food flavoring contains dried carrots and / or apples. 4. Rodenticidal bait according to paragraphs. 1-3, characterized in that the food flavorings additionally contain peanuts and / or sunflower seeds. 5. The rodenticidal bait according to claim 1, characterized in that the coloring material used is an organic colorant disodium salt of zosin Eosin N. 6. Rodenticidal bait according to claim 1, characterized in that bitrex (denatonium benzoate) is used as a repellent. 7. The rodenticidal bait according to claim 1, characterized in that the binder comprises a dextrin polysaccharide and sodium CMC carboxymethyl cellulose glue or PVA polyvinyl acetate glue, taken in a ratio of 1:20, respectively. 8. Rodenticidal bait. p. 1, characterized in that the natural mineral components contained in the protective coating-coating of the dragee are ground marsh peat and river quartz sand. 9. Rodenticidal bait according to claim 1, characterized in that the food attractants contained in the protective coating-coating of the dragee include table salt, sugar and peanut flour, taken in a ratio of 1: 16.7: 16.7, respectively.