For use inside and outside, Martins Permethrin 13.3% Multi-Purpose Insecticide 64oz (8 x 8oz) controls insect pests for up to 4 weeks. Works on lawns, horses, swine, cattle, cows, beef, dairy, animal housing, barns, kennels, yards, dairies, stables, sheep, goats, pigs, poultry, chickens, misting, and dogs. Effective against flies, face flies, horn flies, stable flies, house flies, lice, fleas,