Collar containing a gel formulation comprising an active ingredient a fatty acid and an organic solvent, to control arthropod infestation of animals

摘要

device capable of the controlled, sustained release of an effective amount of an active ingredient that can protect an animal against anthropod pests such as fleas, ticks, flies and mites. Said device comprises a reservoir having a supporting membrane defining a closed cavity and a gel, said gel comprising an admixture of a gelling agent (fatty acid or salt thereof), a linear aliphatic ester, a silicone-based fluid and an active ingredient that will protect the animal against arthopodic pests. The active ingredients are selected from a group consisting of: lindane, methoxychlor, permethrin, cypermethrin, dichlorvos, diazinon, chlorfenvinphos, bendiocarb, amitraz, chlorpyrifos, deltamethrin, sevin and a combination thereof. Also claimed is a gel with the improved formulation for use in a collar or ear tag and the method of preparing said device.