Kills adult fleas, flea eggs and flea larvae in the environment. Treats, controls and prevents flea infestations. Controls flea allergy dermatitis . Prevents heartworm disease caused by Dirofilaria immitis. Treats and controls ear mites (Otodectes cynotis). Treats and controls intestinal hookworm ( Ancylostoma tubaeforme) and roundworm (Toxocara cati). Waterproof after 2 hours.