Vetality® Avantect® II is a vet-quality topical flea & tick solution containing Imidacloprid, Permethrin and Pyriproxyfen – the active ingredients found in K9 Advantix II, but COSTS LESS. Repels & kills fleas, flea eggs, ticks and mosquitoes; repels biting flies, kills lice and is waterproof. Compare this affordable and effective product to K9 Advantix ® II for Dogs active ingredients. Vetality Avantect II, Vet Quality Protection, but COSTS LESS. Includes 4 applicators for 4 months of superior protection. For use on dogs 7 weeks and older and weighing 11-20 lbs.