K9 Advantix kills and repels fleas, ticks, mosquitoes, biting flies and lice. Simpler than a flea collar and hard-to-swallow pills, this topical formula works within 12 hours of initial application to stop existing flea infestations on dogs and prevent new ones by killing adult fleas on contact before they lay new eggs or bite your dog. K9 Advantix offers fast relief at an excellent value, so you and your dog can get back to the things you love most. Use as directed by label. Do not use on cats.

Cat lovers choose Advantage XD for double the lasting protection against fleas vs. other 1-month options. Advantage XD for cats and kittens packs two full months of treatment and continuous protection in each dose, so your cat is protected for longer than the traditional 1-month formula. If your cat has already tousled with fleas, you’ll love that Advantage XD topical treatment starts killing fleas through contact in 30 minutes to 4 hours – that means fleas can be eliminated before they bite your cat. And with Advantage XD extended duration formula, that flea prevention remains effective for 8 weeks, outlasting the typical 6-week flea life cycle and preventing reinfestation.
Find Advantage XD topical flea treatment available in a variety of pack sizes, from 1 dose (2 months of protection), 2 doses (4 months of protection), or 4 doses (8 months of protection). This fragrance-free formula contains Spinetoram, our naturally derived, Green Chemistry Award-winning* ingredient. Advantage XD flea infestation prevention is effective on both indoor and outdoor cats.
Even with the squirmiest of kittens and cats, application is easy. The single, topical, spot-on application goes on the back of your cat’s neck at the base of the skull. You’ll simply place the tip of the tube on the skin and squeeze the tube to expel the entire contents directly on the skin. It's easier than a flea collar, and there are no hard-to-swallow pills; this topical treatment goes on in seconds.
See product label for more information. For the ultimate convenience in care, Advantage XD is available over the counter – no prescription needed. Once Advantage XD is applied, your cat is ready to get right back to exploring the outdoors or finding a cozy spot for a nap, while you get to enjoy peace of mind.
*US EPA Presidential Green Chemistry Challenge, Designing Greener Chemicals Award. 2008.