(Merial) Frontline Plus for dogs and puppies is a convenient spot-on treatment for fast-acting, long-lasting control of fleas, ticks and lice in dogs and puppies 8 weeks of age or older. Kills all stages of fleas and ticks. Contains fipronil and insect growth regulator S-methoprene to stop and prevent reinfestation. Do not reapply sooner than every 30 days. Do not use on cats.