Frontline Plus (BLUE) for Dogs 23-44lbs 6/mo supply FOR DOGS & PUPPIES 8 weeks or older Convenient spot treatment for fast-acting, long-lasting control of fleas and ticks. FRONTLINE® Plus for Dogs provides fast, effective and convenient treatment and control of fleas, ticks and chewing lice for dogs and puppies. Stops and prevents infestations Kills adult fleas, flea eggs, and flea larvae Prevents all flea stages (eggs, larvae, pupae) from developing Kills fleas which may cause flea allergy dermatitis Kills all stages of deer ticks (which may carry Lyme disease), brown dog ticks, American dog ticks, and lone star ticks Prevents and controls reinfestations Rapidly eliminates infestations with chewing lice Aids in control of sarcoptic mange infestations Can also be used on breeding, pregnant and lactating bitches Fast-acting Long-lasting Waterproof Convenient to use FRONTLINE® Plus for Dogs contains fipronil and the insect growth regulator (IGR) (S)-methoprene. FRONTLINE® Plus effectively targets all stages of fleas. Fipronil collects in the oils of the skin and hair follicles, and continues to be released from hair follicles onto the skin and coat, resulting in long-lasting activity against fleas, ticks and chewing lice