Permectrin II insecticide kills flies, lice, mites, ticks (including ticks that carry Lyme disease), fleas, spiders, mosquitoes and cockroaches on horses, beef and dairy cattle, swine, sheep, poultry, dogs and their premises. May be applied as a spray, dip or on a back-rubber. Mixes with water or mineral oil and offers a 30 day residual effect.