SWAT is a ready-to-use insecticide for horses containing the pyrethroid insecticide Permethrin in a non-irritant formulation It has a high residual efficacy against Buffalo Fly, Stable Fly and Sand-flies RAIN RESISTANT FORMULA For long lasting effectiveness LOW IRRITANT No Alcohol formula HIGHLY CONCENTRATED ACTIVE INGREDIENTS: 87g/L Permethrin(25:75 cis:trans) 250mL will provide 2 months protection for 1 horse(8 applications)Applicator Supplied