WO2024176257A1

WO2024176257A1 - Animal repellent chemical composition

Info

Publication number: WO2024176257A1
Application number: PCT/IN2024/050183
Authority: WO
Inventors: Aditya Pawankumar Bajaj
Original assignee: Aditya Pawankumar Bajaj
Priority date: 2023-02-20
Filing date: 2024-02-20
Publication date: 2024-08-29

Abstract

The present invention discloses an animal repellent chemical composition that mimics the odor of animal excretion to repel rodents or mammals The animal repellent chemical composition includes compounds such as 3-Mercapto-3-methyl 5 butan-1-ol, 4-methoxy-2- methylbutane-2-thiol and 4-Mercapto-4-methylpentan-2- one. The composition additionally includes at least one of the compounds from surfactants, stabilizers, preservatives, antifreezing agent, anticaking agent, binders, viscosity modifying agents, clay, silica, limestone, perlite or water as a diluent and a chemical compound 2-methyl-2-thiazoline and balsam fir oil or garlic oil. The animal repellent composition is a ready to mix water-based formulation to repel rodents and mammals. The repellent composition is simple to use, provides longer lasting repellent efficacy and does not allow animals to become accustomed to the repellent.

Description

“ANIMAL REPELLENT CHEMICAL COMPOSITION” FIELD OF THE INVENTION: The present invention relates to an animal repellent composition and more particularly to an animal repellent chemical composition mimicking odour of animal excretion. BACKGROUND OF THE INVENTION: Animals and rodents have a detrimental impact on a variety of industries, including forestry, cattle, and agriculture. As a result, they pose serious risks to productivity and operational efficiency. A variety of animal species, such as rabbits, deer, rats, mice, squirrels, and hamsters, utilize vegetables, grain storage containers, young trees, and bark as food sources while also serving as carriers of infectious agents. Rodents, including species like rats and mice, have sharp teeth and are capable of damaging structures, electrical, insulation, and personal items. The structural integrity of houses and furnishings is compromised by their chewing habits on wood, plastic, and other materials. Beyond their structural effects, rodents have a major adverse impact on health since they may transmit diseases like leptospirosis and hantavirus. Furthermore, their waste, including saliva, feces, and urine, contaminates surfaces, endangering human health and inducing allergic reactions in vulnerable persons. Additionally, these pests endanger sources of food and water, and some animals such as deer and rabbits damage gardens, crops, and flowers through their ravenous eating habits. Groundhogs and other burrowing animals disturb lawns and gardens by excavating tunnels and mounds. Moreover, rats harbor fleas, ticks, and other pests, that may result in secondary infestations of insects in houses. Animals that are nocturnal add to noise disruptions, that affect people's sleep and general wellbeing. Comprehensive actions are required to control and eradicate these animals in light of these difficulties. A simple approach to avoid or mitigate problems related to unwanted animals is to implement efficient pest control techniques, such as trapping and maintaining proper sanitation. Nevertheless, it is not always possible to utilize traps. As a result, using efficient repellents becomes imperative in order to protect against possible losses and damages brought on by the encroachment of these pests. The use of repellents is essential for keeping these animals away from habitations. Numerous repellents are known in the art that exhibit efficacy in deterring creatures that pose a significant threat. One approach involves utilizing animal excrement to discourage certain animals by emitting an offensive and potent odor. Red fox urine, renowned for its strong and disagreeable smell, is well-documented in deterring numerous small mammals, including squirrels, rats, mice, and rabbits. Prey animals experience psychological stress in the presence of fox urine, prompting them to protect themselves by vacating the area. The scent of this predator's urine induces fear in prey animals, leading them to flee. Moreover, studies suggest that urine from cats or wolves can also function as a deterrent for various small animals. Scientific evidence supports the notion that odors emanating from excretions and secretions of predatory species cause animals to avoid specific areas. However, producing a substantial quantity of excreta from threatened species, such as wolves, cats, foxes, lions, and others, poses a significant challenge. Another strategy involves the utilization of plant essential oils and herb oils to repel animals. However, these oils are highly volatile and evaporate rapidly. Additionally, they exhibit a weak repellent effect. Moreover, animals may become accustomed to these repellents after repeated exposure. The US Patent Application No. US9913477B2 to Johnson Alexander and colleagues describes a small animal repellent incorporating aromatic salt. This invention reveals a small animal repellent in the form of salt infused with a variety of aromatic compounds that gradually release over an extended period, reducing the necessity for frequent reapplication. However, aromatic compounds originate from essential oils and natural ingredients known for their higher volatility. Additionally, these substances are only released upon the dissolution of the salt. On the other hand, the European Patent Application No. EP3771336A1 to Volz Kirstin and others discloses a repellent composition featuring margosa oil, lauric acid, and a spreading agent. This composition employs at least one pesticide and is formulated as a spot-on application specifically designed for arthropods. It is noteworthy, however, that this formulation is not applicable for deterring rodents or mammals. Thus, there is a need for an animal repellent composition that mimics the odor of animal excretion, effectively deterring rodents or mammals. There is a further need for an animal repellent composition that exhibits prolonged efficacy, thereby reducing the frequency of reapplication. SUMMARY OF THE INVENTION: The animal repellent chemical composition of the present invention includes 0.0001% to 10% 3-Mercapto-3-methyl butan-1-ol, 0.0001% to 10% 4-Methoxy-2- methylbutane-2-thiol, 0.0001% to 2.5% 4-Mercapto-4-methylpentan-2-one, 0.1% to 10% surfactants/ 0.01% to 5% stabilizers/ 0.01 % to 10% preservatives, additives selected from one or more of antifreezing agent, viscosity modifying agents, anticaking agents and binders; and a diluent. The composition additionally includes 0.01% to 10% 2-Methyl-2- thiazoline and/or 0.01% to 20% balsam fir oil or garlic oil. The surfactant is selected from the group consisting of nonionic and anionic surfactants such as sodium lauryl sulphate, alkyl naphthalene sulfonates, alkyl naphthalene sulfonate condensates, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monolaurate, saccharides, ligno sulfonates, alkyl sulfates, etc; the stabilizer is selected from the group consisting of acids, oils, oxides, phenols derivatives, lactones, butylated hydroxy toluene etc; and the preservative is selected from the group consisting of Benzisothiazolinone (BIT), mixture of Methylisothiazolinone (MIT) and Methylchloroisothiazolinone (CIT) or mixtures of Benzisothiazolinone and MIT or CIT. The form of composition is selected from liquid, gels, powder, granules or pellets. When the composition is liquid, the additives include 0.1% to 10% antifreezing agent selected from the group consisting of propylene glycol, glycerine, ethylene glycol, etc; and 0.01% to 2% viscosity modifying agent selected from the group consisting of xanthum gum, carboxy methyl cellulose, hydroxy propyl methyl cellulose, etc. When the composition is solid, the additives include 0.2% to 10% anticaking agents selected from the group consisting of calcium stearate, sodium carbonate, sodium sulphate, potassium chloride, calcium chloride; or 0.1 to 15 % binders selected from polysaccharides, sodium ligno sulphonates, starch, CMC/gelatin etc. When the composition is liquid, the diluent is water and when the composition is solid the diluent is 0.1% to 99% clay or silica or limestone or perlite. DESCRIPTION OF THE INVENTION: The foregoing objects of the present invention are accomplished and the problems and shortcomings associated with the prior art, techniques and approaches are overcome by the present invention as described below in the preferred embodiments. All materials used herein were commercially purchased as described herein or prepared from commercially purchased materials as described herein. Although specific terms are used in the following description for sake of clarity, these terms are intended to refer only to particular structure of the invention selected for illustration in the drawings and are not intended to define or limit the scope of the invention. References in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, characteristic, or function described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment. References in the specification to “preferred embodiment” means that a particular feature, structure, characteristic, or function described in detail thereby omitting known constructions and functions for clear description of the present invention. The foregoing description of specific embodiments of the present invention has been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present invention to the precise forms disclosed and obviously many modifications and variations are possible in light of the above teaching. The present invention relates to an animal repellent chemical composition that mimics the odour of animal excretion to repel rodents or mammals. The present invention provides an animal repellent composition formulated using chemical compounds or synthetic raw materials including 3-Mercapto-3- methyl butan-1-ol, 4-Methoxy-2- methylbutane-2-thiol and 4-Mercapto-4- methylpentan-2-one to repel rats and animals. In an embodiment, the present invention describes an animal repellent chemical composition formulated using chemical compounds or synthetic raw materials including 3-Mercapto-3-methyl butan-1-ol, 4-Methoxy-2- methylbutane- 2-thiol and 4-Mercapto-4-methylpentan-2-one, one component selected from surfactants/ stabilizers/ preservatives, antifreezing agent, viscosity modifying agent and water as a diluent to repel rats and animals. In accordance with this embodiment, the animal repellent chemical composition of the present invention includes: a. 0.0001% to 10% 3-Mercapto-3-methyl butan-1-ol, b. 0.0001% to 10% 4-Methoxy-2- methylbutane-2-thiol, c. 0.0001% to 2.5% 4-Mercapto-4-methylpentan-2-one, d. 0.1% to 10% surfactants/ 0.01% to 5% stabilizers/ 0.01 % to 10% preservatives, e. 0.1% to 10% antifreezing agent, f. 0.01% to 2% viscosity modifying agent, and g. water as a diluent. In another embodiment, the present invention describes an animal repellent chemical composition formulated using chemical compounds or synthetic raw materials including 3-Mercapto-3-methyl butan-1-ol, 4-Methoxy-2- methylbutane- 2-thiol and 4-Mercapto-4-methylpentan-2-one, one component selected from surfactants/ stabilizers/ preservatives, one component selected from anticaking agents/ binders, and diluents such as clay, silica, limestone or perlite to repel rats and animals. In accordance with this embodiment, the animal repellent chemical composition of the present invention includes: a. 0.0001% to 10% 3-Mercapto-3-methyl butan-1-ol, b. 0.0001% to 10% 4-Methoxy-2- methylbutane-2-thiol, c. 0.0001% to 2.5% 4-Mercapto-4-methylpentan-2-one, d. 0.1% to 10% surfactants/ 0.01% to 5% stabilizers / 0.01 % to 10% preservatives, e. 0.2% to 10% anticaking agents/ 0.1 to 15 % binders, and f. 0.1% to 99% clay/ silica/ limestone/perlite as a diluent. In this embodiment, the formulation is in solid form, therefore the active is sprayed over the diluent and then mixed with other ingredients to get the product of desired composition. In another embodiment, the present invention provides an animal repellent chemical composition formulated using chemical compounds or synthetic raw materials such as 3-Mercapto-3-methyl butan-1-ol, 4-Methoxy-2- methylbutane-2- thiol and 4-Mercapto-4-methylpentan-2-one, one component selected from surfactants/ stabilizers/ preservatives, antifreezing agent, viscosity modifying agent and water as a diluent along with chemical compound 2-Methyl-2-thiazoline, balsam fir oil or garlic oil to repel rodents and mammals. In accordance with this embodiment, the animal repellent chemical composition of the present invention includes: a. 0.0001% to 5% 3-Mercapto-3-methyl butan-1-ol, b. 0.0001% to 2.5% 4-methoxy-2- methylbutane-2-thiol, c. 0.0001% to 2.5% 4-Mercapto-4-methylpentan-2-one, d. 0.01% to 10% 2-Methyl-2-thiazoline, e. 0.01% to 20% balsam fir oil or garlic oil, f. 0.1% to 10% surfactants/ 0.01% to 5% stabilizers/ 0.01 % to 10% preservatives, g. 0.1% to 10% antifreezing agent, h. 0.01% to 2% viscosity modifying agent, and i. water as a diluent. In accordance with the present invention, the formulation is selected from a ready-mix formulation or the form of gels, powder, granules or pellets. The balsam fir oil or garlic oil are procured from commercially available sources. The surfactant is selected from the group consisting of nonionic and anionic surfactants such as sodium lauryl sulphate, alkyl naphthalene sulfonates, alkyl naphthalene sulfonate condensates, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monolaurate, saccharides, ligno sulfonates, alkyl sulfates, etc. The stabilizer is selected from the group consisting of acids, oils, oxides, phenols derivatives, lactones, butylated hydroxy toluene etc. The preservative is selected from the group consisting of Benzisothiazolinone (BIT), mixture of Methylisothiazolinone (MIT) and Methylchloroisothiazolinone (CIT) or mixtures of Benzisothiazolinone and MIT or CIT. The antifreezing agent is selected from the group consisting of propylene glycol, glycerine, ethylene glycol, etc. The anticaking agent is selected from the group consisting of calcium stearate, sodium carbonate, sodium sulphate, potassium chloride, calcium chloride and binders include polysaccharides, sodium ligno sulphonates, starch, CMC/gelatin etc. The viscosity modifying agent is selected from the group consisting of xanthum gum, carboxy methyl cellulose, hydroxy propyl methyl cellulose, etc. Water is selected from the group consisting of ionized, distilled, filtered, purified, mineral, sterile and a mixture thereof. The addition of a suitable surfactant allows the formulation of a composition to form an emulsion that lasts for some duration. The addition of preservatives prevents decay, decomposition or spoilage of the animal repellent composition. In the preferred embodiment, the composition is used to repel rodents and mammals of the category deer, rabbit, etc. These and other embodiments will be apparent to those of skill in the art and others in view of the following detailed description of some embodiments. It should be understood, however, that this summary and the detailed description illustrate only some examples of various embodiments and are not intended to be limiting to the invention as claimed. The following examples illustrate the invention but are not limiting thereof. EXAMPLES: EXAMPLE 1: Liquid Formulations Table No.1 Composition Composition Composition Composition No. 1 No. 2 No. 3 No. 4 ^ Components Quantity in Quantity in Quantity in Quantity in ^ gms gms gms gms 2-methyl-2-thiazoline 0.025 0.025 0 0 3-Mercapto-3-methyl butan-1-o1 0 0.025 0.025 0.025 4-Methoxy-2- methylbutane-2-thiol 0 0 0.015 0 4-Mercapto-4- methylpentan-2-one 0 0 0.025 0.025 Sodium lauryl sulphate 0.3 0.3 0.3 0.3 propylene glycol 25 25 25 25 1,2-benzisothiazolin-3- one. 1 1 1 1 Polysorbate 5 5 5 5 Xanthan gum 0.03 0.03 0.03 0.03 Butylated hydroxy toluene 0.1 0.1 0.1 0.1 Water 968.54 968.52 968.50 968.52 ^ ^ ^ ^ ^ Total in gms 1000.00 1000.00 1000.00 1000.00 Preparation of Composition No.1: In a 100 ml beaker 50 ml of water was taken and then 0.3 gm of sodium lauryl sulphate, 5 gm of propylene glycol were added and stirred for two minutes. After stirring for two minutes, 2-methyl-2-thiazoline was added and stirred for 10 minutes to obtain solution one. In another beaker of 2 lit capacity, remaining amount of water was taken. 0.03 gm of xanthan gum was added to the water and stirred for half an hour, followed by addition of polysorbate, butylated hydroxy toluene and 1,2- benzisothiazolin-one. After addition of all ingredients the solution was further stirred for 10 minutes to obtain solution two. Solution one was then added to solution two under stirring. The stirring is continued for 30 minutes to obtain the final product. All the compositions 2 to 4 were prepared as described above wherein the quantity of the components were taken as mentioned in Table No.1 Table No.2 Composition Composition Composition Composition Composition No. 5 No. 6 No. 7 No. 8 No. 9 ^ Components Quantity in Quantity in Quantity in Quantity in Quantity in ^ gms gms gms gms gms 2-methyl-2- thiazoline 0 0 0 0 0 3-Mercapto-3- methyl butan-1- o1 0.025 0.05 0 0 0.025 4-Methoxy-2- methylbutane-2- thiol 0 0 0 0 0 4-Mercapto-4- methylpentan-2- one 0.025 0.05 0 0 0.015 Balsam fir oil 15 15 15 0 15 Garlic oil 0 ^0 ^0 15 ^0 Sodium lauryl sulphate 0.5 0.5 0.5 0.5 0.5 propylene glycol 25 25 25 25 25 1,2- benzisothiazolin- 3-one. 1 1 1 1 1 Polysorbate 5 5 5 5 5 Xanthan gum 0.05 0.05 0.05 0.05 0.05 Butylated hydroxy toluene 0.1 0.1 0.1 0.1 0.1 Water 953.3 953.25 953.35 953.35 953.3 ^ ^ ^ ^ ^ ^ Total in gms 1000 1000 1000 1000 1000 Preparation of Composition No.5: In a 100 ml beaker 50 ml of water was taken and then 0.5 gm of sodium lauryl sulphate, 5 gm of propylene glycol were added and stirred for two minutes. After stirring for two minutes, 3-Mercapto-3-methyl butan-1-o1 and 4-Mercapto- 4-methylpentan-2-one was added and stirred for 10 minutes to obtain solution one. In another beaker of 2 lit capacity, remaining amount of water was taken. 0.05 gm of xanthan gum was added and stirred for half an hour, followed by addition of polysorbate, butylated hydroxy toluene, Balsam fir oil and 1,2- benzisothiazolin-one. After addition of all ingredients the solution was further stirred for 10 minutes to obtain solution two. Solution one was then added to solution two under stirring. The stirring is continued for 30 minutes to obtain final product. All the compositions 6 to 9 were prepared as described above wherein the quantity of the components were taken as mentioned in Table No.2. EXAMPLE 2: Repellency test Repellency test was done as per the process described below. Methodology: The field rodent black rat was used as test pest for the experiment. Collected rats were acclimatized under laboratory conditions in the study chamber (20m³) before the initiation of the experiment. During acclimatization, rodents were provided with feed and water ad libitum. Preparation of samples: Five different colours of wires each measuring 10 cm size were selected for each replication. Two sets of such wire samples were prepared for spraying of experimental sample and were tested for zero-day efficacy and 30 days persistency. All the wires used were labelled and weighed before and after spray. The treated wire samples 10 cm in length were weighed and placed in one corner of the study chamber in each treatment. Likewise, untreated wire sample of 10 cm in length was weighed and placed at the opposite corner of study chamber. One rodent was released inside the chamber. Samples were exposed to rodents for 72 hrs. Tap water and standard laboratory chows were provided ad libitum during the complete exposure period. The experiment was conducted with two replicates in each sample. After 72 hrs exposure, both the treated and untreated wire samples were weighed, and data recorded. Treated samples and untreated samples were observed under the microscope or visually for bite markings. The percent repellency was calculated by using the formula below. (A-T /A) X 100 A-Number of teeth markings/weight loss in control material T- Number of teeth markings/Weight loss in treated material Results: Summary of the Repellency test is tabulated in Table No.3 Table No.3 ^ Composition Percentage repellency over control ^ Zero day After 30 days Composition No.1 28.00% 17.00% Composition No.2 54.55% 25.00% Composition No.3 72.50% 31.72% Composition No.4 80.22% 52.71% Composition No.5 93% 75% Composition No.6 100.00% 81.00% Composition No.7 76.96% 56.25% Composition No.8 72.94% 54.71% Composition No.9 90.00% 68.00% The data in Table 3 indicates that the combination of 3-Mercapto-3-methyl butan- 1-o1, 4-Methoxy-2-methylbutane-2-thiol, 4-Mercapto-4-methylpentan-2-one shows repellency of greater than 72% on zero day of spraying Composition No.3. Surprisingly it is found that the combination as per the present invention, 3- Mercapto-3-methyl butan-1-o1 and 4-Mercapto-4-methylpentan-2-one at specific ratio shows repellency of 80% (Composition No. 4). When combined with oil of the present invention, the repellency of the formulation is further enhanced to 93% and 100% as exemplified in Composition No. 5 and 6 wherein repellency of 75% and 81% respectively is observed after 30 days. When Balsam oil and garlic oil are used alone in the formulation the repellency is 76% and 72%. This clearly indicates that the repellency synergistic effect is observed when the oil is combined with 3-Mercapto-3-methyl butan-1-o1 and 4- Mercapto-4-methylpentan-2-one at specific ratio. Further, the data reveals that the highest repellency over control is observed in the Composition No. 6, (combination of 3-Mercapto-3-methyl butan-1-o1 at 0.005% and 4-Mercapto-4-methylpentan-2-one at dose of 0.005% + balsam oil 1.5%) followed by Composition No. 5 (combination of 3-Mercapto-3-methyl butan-1-o1 at 0.0025% and 4-Mercapto-4-methylpentan-2-one at dose of 0.0025% + balsam oil 1.5%). EXAMPLE 3: Powders/Gels/Granules/Pellets Formulations General procedure for powder preparation In a 100 ml beaker, water was taken and mixed with 2- Propanol and stirred for two minutes. After stirring for two minutes, 3-Mercapto-3-methyl butan-1-o1 and 4-Mercapto-4-methylpentan-2-one and Balsam oil were added and stirred for 10 minutes to obtain liquid solution. In a ribbon blender of 2 kg capacity, limestone is charged. Under blending, the liquid solution is sprayed over limestone powder. After spraying is completed, the mixture is blended for an additional two hours and then air dried to obtain the final product in Powder form. General procedure for Granule preparation In a 100 ml beaker, water was taken and mixed with 2-Propanol and stirred for two minutes. After stirring for two minutes, 3-Mercapto-3-methyl butan-1-o1 and 4-Mercapto-4-methylpentan-2-one and balsam oil were added and stirred for 10 minutes to obtain liquid solution. In a ribbon blender of 2 kg capacity, limestone, clay and perlite is charged. Under blending, the liquid solution is sprayed. After spraying is completed, binder is added and further additional water is added and blended to prepare a dough, this dough is then extruded through a suitable equipment to get granules and further air dried to obtain granules having mesh size below 2 mm. General procedure for Gel preparation Required quantity of gelling agent polymer (carbopol) or any other gelling agent (indicated in Table No. 4) was weighed and mixed with sufficient amount of distilled water and stirred continuously for five hours to soak and neutralized with Tri ethanol amine and then kept for 24 hours to obtain gel base. In a 100 ml beaker, water was taken and mixed with propylene glycol and stirred for two minutes. After stirring for two minutes, 3-Mercapto-3-methyl butan- 1-o1 and 4-Mercapto-4-methylpentan-2-one, balsam oil, surfactant, preservative was added and stirred for 10 minutes to obtain liquid solution. This liquid solution is transferred to another beaker where the remaining amount of water and gel base is added and stirred to obtain gel product of desired composition. General procedure for Pellet preparation In a 100 ml beaker, water was taken and mixed with 2-Propanol and stirred for two minutes. After stirring for two minutes, 3-Mercapto-3-methyl butan-1-o1 and 4-Mercapto-4-methylpentan-2-one and balsam oil was added and stirred for 10 minutes to obtain liquid solution. In a ribbon blender of 2 kg capacity, clay and perlite is charged. Under blending, the liquid solution is sprayed. After spraying is completed, a binder is added and further additional water is added and blended to prepare a dough, this dough is then pressed through a suitable equipment to get pellets and further air dried to obtain pellets having mesh size below 5 mm. All the compositions were prepared as described above wherein the quantity of the components were taken as mentioned in Table No.4. Table No.4. Composition Composition Composition Composition Composition Composition Composition Composition Components No.10 No.11 No.12 No.13 No.14 No.15 No.16 No.17 Qty in gms Qty in gms Qty in gms Qty in gms Qty in gms Qty in gms Qty in gms Qty in gms Granule Granule Granule Granule Powder Gel preparation preparation preparation preparation preparation preparation Pellets Pellets 3-Mercapto-3- methyl butan-1-o1 0.05 0.05 0 0.05 0.05 0.05 0.05 0.05 4-Mercapto-4- methyl pentan-2- 0.05 0.05 0 0.05 0.05 0.05 0.05 0.015 one Balsam fir oil 15 20 20 0 20 20 20 20 Clay 99 99 99 99 0 0 49 49 Perlite 200 200 200 200 0 0 909.9 909.935 Lime stone 674.9 669.9 670 689.9 979.9 25 0 0 2Propanol 10 10 10 10 10 0 10 10 Starch 10 10 10 10 0 0 0 0 CMC/gelatin 0 0 0 0 0 0 20 20 Polysorbate 20/80 0 0 0 0 0 25 0 0 BHT 1 1 1 1 1 0 1 1 Propylene glycol 0 0 0 0 0 50 0 0 Benzoate 0 0 0 0 0 5 0 0 Carbopol gel base 0 0 0 0 0 20 0 0 Water 20 20 20 20 20 854.9 20 20 Total in gms 1030 1030 1030 1030 1031 1000 1030 1030 EXAMPLE 4: Repellency test Repellency test was done as per the process described below. Experiments were conducted in 30m³ study chamber. Feed (standard 5 laboratory chow) was weighed and kept diagonally at two corners of the chamber 10 cm away from the side walls. In one corner experimental test was applied/spread on the floor in a curve, similarly opposite corner was served as untreated control where normal talcum powder was used. One rat was placed in the centre of the chamber with tap water and observations were recorded after 72 hours. 10 The percent repellency was calculated using the following formula (A-B/A) ×100 A –weight loss in Control corner feed B - weight loss in Treated corner feed. Results: Summary of the Repellency test is tabulated in Table No.5 Table No.5 Composition Percentage repellency Composition No.10 90.20% Composition No.11 98.30% Composition No.12 71% Composition No.13 82% Composition No.14 99% Composition No.15 100% Composition No.16 95.30% Composition No.17 88% The data in Table 5 indicates that the combination of 3-Mercapto-3-methyl butan-1-o1, 4-Methoxy-2-methylbutane-2-thiol, 4-Mercapto-4-methylpentan-2- one shows repellency of 82% (Composition No. 13). Surprisingly it is found that combination as per the present invention, 3-Mercapto-3-methyl butan-1-o1 and 4- Mercapto-4-methylpentan-2-one at specific ratio in combination with oil is able to show repellency of 98.3% (Composition No.11). Advantageously, the animal repellent chemical composition of the present invention is a ready to mix water-based formulation to repel rodents and mammals. The animal repellent composition provides longer lasting repellent efficacy. The animal repellent composition mimics the odour of excretion of animals that induces fear in animals and deter these animals. The animal repellent composition does not allow animals to acclimatize to the composition and hence minimize the need for frequent reapplication. The embodiments were chosen and described in order to best explain the principles of the present invention and its practical application, to thereby enable others, skilled in the art to best utilize the present invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omission and substitutions of equivalents are contemplated as circumstance may suggest or render expedient, but such are intended to cover the application or implementation without departing from the scope of the present invention.

Claims

CLAIMS: 1. An animal repellent chemical composition comprising: a. 0.0001% to 10% 3-Mercapto-3-methyl butan-1-ol, b. 0.0001% to 10% 4-Methoxy-2- methylbutane-2-thiol, c. 0.0001% to 2.5% 4-Mercapto-4-methylpentan-2-one, d. 0.1% to 10% surfactants/ 0.01% to 5% stabilizers/ 0.01 % to 10% preservatives, e. additives selected from one or more of antifreezing agent, viscosity modifying agents, anticaking agents and binders; and f. a diluent.

2. The animal repellent chemical composition as claimed in Claim 1, additionally includes 0.01% to 10% 2-Methyl-2- thiazoline.

3. The animal repellent chemical composition as claimed in Claim 1, additionally includes 0.01% to 20% balsam fir oil or garlic oil.

4. The animal repellent chemical composition as claimed in Claim 1, wherein the surfactant is selected from the group consisting of nonionic and anionic surfactants such as sodium lauryl sulphate, alkyl naphthalene sulfonates, alkyl naphthalene sulfonate condensates, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monolaurate, saccharides, ligno sulfonates, alkyl sulfates, etc; the stabilizer is selected from the group consisting of acids, oils, oxides, phenols derivatives, lactones, butylated hydroxy toluene, etc; and the preservative is selected from the group consisting of Benzisothiazolinone (BIT), mixture of Methylisothiazolinone (MIT) and Methylchloroisothiazolinone (CIT) or mixtures of Benzisothiazolinone and MIT or CIT.

5. The animal repellent chemical composition as claimed in Claim 1, wherein the form of composition is selected from liquid, gels, powder, granules or pellets.

6. The animal repellent chemical composition as claimed in Claim 1, wherein when the composition is liquid, the additives include: a. 0.1% to 10% antifreezing agent selected from the group consisting of propylene glycol, glycerine, ethylene glycol, etc; and b. 0.01% to 2% viscosity modifying agent selected from the group consisting of xanthum gum, carboxy methyl cellulose, hydroxy propyl methyl cellulose, etc.

7. The animal repellent chemical composition as claimed in Claim 1, wherein when the composition is solid, the additives include: a. 0.2% to 10% anticaking agents selected from the group consisting of calcium stearate, sodium carbonate, sodium sulphate, potassium chloride, calcium chloride; and b. 0.1 to 15 % binders selected from polysaccharides, sodium ligno sulphonates, starch, CMC/gelatin, etc.

8. The animal repellent chemical composition as claimed in Claim 1, wherein when the composition is liquid the diluent is water; and when the composition is solid the diluent is 0.1% to 99% clay or silica or limestone or perlite.