K9 Advantix II Flea and Tick Topical Treatment for Dogs 21-55 lbs, 4-doses, 2-count

K9 Advantix II delivers fast-acting flea and tick protection for medium-sized dogs weighing 21-55 pounds. This topical treatment kills fleas within 12 hours and ticks within 48 hours, providing month-long defense against infestations. The waterproof formula remains effective even after swimming or bathing. Each package contains four individual doses, with two applications included, ensuring consistent parasite prevention throughout the season. Veterinarian-recommended and trusted by pet owners nationwide.