Advecta Ultra LG Dog 21-55lbs 4 Pack

Advecta Ultra® Flea & Tick Protection for Dogs contains the same active ingredients as K9 Advantix® for Dogs*. This fast-acting, long-lasting, waterproof formula kills and repels fleas, ticks, and mosquitoes – all while breaking the flea lifecycle by killing flea eggs, flea larvae, and chewing lice for up to 30 days.