Kills fleas, flea eggs & larvae and chewing lice. Kills all stages of ticks, including that may transmit Lyme disease. Aids in control of sarcoptic mange mite infestations. Use only on dogs 45-88 lbs and 8 weeks or older. Do not use on cats. 3 doses. Fast acting. Long-lasting. Waterproof. PetAction Plus for Dogs contains the active ingredients fipronil and (s)-methoprene that effectively kills and controls fleas, ticks, and chewing lice. PetAction Plus for Dogs is fast-acting, long-lasting, waterproof, and easy to use. PetAction Plus for Dogs remains effective even after bathing, water immersion, or exposure to sunlight. PetAction Plus for Dogs can also be use on breeding, pregnant and lactating bitches. Question or comments about this product? Call: 1-888-314-8585 Monday-Friday, 8 am-8 pm EST. Made in Germany.