• UP TO 22 POUNDS • Do not use on puppies under 8 weeks of age. Complete control of flea, tick and chewing lice infestation • Kills adult fleas for up to three months • Kills adult fleas, which may be a source of flea allergy dermatitis and flea bit anemia • Controls mites that may cause sarcopic mange. Kills ticks including thos that may transmit lyme disease • Can be used on breeding, pregnant, and lactating dogs. Kills brown, american, lone star and all stage of deer ticks • Effective after bathing and exposure to water and sunlight