Seresto provides up to 8 months flea protection for cats in an water resistant^, odourless innovative collar format.
The active ingredients in Seresto are specially formulated for steady dose adjusted release that spreads over your cat, remaining in the fatty layer of the skin and coat, where they are effective against fleas.
Fleas don't have to bite your cat to be affected, so your cat doesn't suffer from painful, irritating bites.
^ some limitations apply see Product Label for full details.