LIBERTY 50 - Puppy Under 33 lbs. For puppies, miniature dogs, and toy dogs For use on dogs and puppies over 12 weeks of age Kills 5 different kinds of pests on dogs including fleas, ticks, mosquitoes, lice, and mites Kills, repels, and prevents reinfestation of fleas for up to 5 weeks Kills flea eggs and larvae for up to 8 weeks