Question: what are the best flea collars for cats?
Answer: Bayer Seresto. Bayer Seresto cat flea collars are all highly recommended by veterinarians. ... 
Hartz UltraGuard Plus. When it comes to cat flea collars, Hartz is a recognized brand. ... 
Natural Pet & Flea Collar. ... 
Pet Gallow Flea Collar.