K9 Advantix II is our top pick among the best flea and tick treatments for dogs. It kills fleas and ticks, while also repelling and killing mosquitoes, biting flies, and lice with a single, easy ...

Flea shampoos kill fleas that are present on your cat, but topical and oral flea control products are much more effective. Some flea shampoos are even harmful to cats, as the often contain pyrethrins.