3 Pack, Frontline Plus Flea & Tick Control, For Medium Dogs Weighing 23 To 44 LB, A Once A Month Topical Treatment, Kills Fleas, Flea Eggs, Ticks & Chewing Lice, Prevents Development Of All Fleas Stages, Breaks The Flea Life Cycle & Controls Ticks & Chewing Lice Infestations, Each Package Contains Three 1 Month Applications.