Abstract: A pesticidal formulation for external application comprises at least one pesticide effective against ectoparasites and at least one polar solvent for the pesticide. The pesticide and solvent together constitute a pesticidal component comprising a solution of the pesticide in the solvent. The pesticidal component is admixed with an aqueous component. The pesticidal component is miscible in the aqueous component. Water constitutes at least 30% m/v of the formulation. No solvent having a solubility in water of 15 gm/l or less at ambient temperature, is present.

Abstract: This invention relates to an animal pour-on pesticidal formulation which comprises at least one pesticide selected from the group consisting of the synthetic pyrethroids, preferably cypermethrin, the organophosphates and the amidines, and at least one vegetable oil consisting of glycerides of carboxylic acids with carbon chain lengths of more than 14 carbon atoms e.g. sunflower oil, as carrier for the pesticide which carrier constitutes at least 70% m/v of the formulation. The formulation may optionally further include a synergist, preferably piperonylbutoxide and solvents such as diacetone alcohol and dibutylphthalate.