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Check out the most popular brands: Frontline Plus, Advantage & Hartz. Compare our low prices and save. Shipping is always free when you spend $49 or more, and we ship FAST - overnight to more than 75% of the country, and in 2 days to everyone else. Plus, this now includes Saturday delivery to most of the country. Simply order by 6 p.m., and you will receive your package within 2 business days. We do everything possible to ensure that your shopping experience is hassle-free, fun and rewarding.