Jeremy from Bonaire, Ga writes
Does the collar kill all fleas on a cat or does it drive the fleas off of the cat?
The Seresto Cat Flea and Tick Collar will kill fleas. It does not repel them. It works similarly to a monthly topical, but as the active ingredients wear off over time, a new supply is continuously replenished in low concentrations. The active ingredients spread from the site of direct contact over the skin surface.
Answer last updated on: 09/19/2017