Our top picks for the best flea treatments for cats Best topical overall: Revolution Plus Topical Solution - See at Chewy Best OTC topical: Frontline Plus for Cats - See at Chewy Best fast-acting ...

kills adult fleas on your cat within 30 minutes. It doesn't have any lasting effects, though. Spinosad (Comfortis) is a fast-acting chewable that starts killing fleas before they lay eggs.

Best pill Simparica TRIO is our pick for the best flea and tick treatment for dogs in pill form. The fast-acting chewable tablet kills more parasites than any other oral product. It starts to work ...