Adams Plus Flea and Tick Spot On for Dogs, Extra Large Dogs 61-150 Pounds, 3 Month Supply, Refill, No Applicator Kills adult fleas, flea eggs, and flea larvae Kills adult ticks, tick nymphs, and tick larvae 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. Kills and repels mosquitoes Provides 30 day protection from infestation