Adams Flea and Tick Spot On for Cats, Over 2.5 Pounds but under 5 Pounds, 3 Month Supply, Refill, No Applicator Kills fleas, deer ticks, flea eggs, flea larvae, & mosquitoes Provides 30 day protection from flea infestation Breaks the flea life cycle to prevent infestation Works with the reusable Smart Shield(TM) Applicator, which parts the fur to get the drops onto your pet's skin and not on your hands.