Seresto Flea and Tick Collar for Cats 10 weeks of age and older provides continuous 8-month flea and tick protection. Unlike some oral flea and tick prevention for cats . which require a bite . the Seresto for cats collar repels fleas and ticks and kills through contact . so they don’t have to bite your cat to die. Seresto collars are made with a long-lasting . 8-month formula for continuous release coverage over your cat’s skin and coat. The odorless . non-greasy collar is easy to put on . and it can be used alongside other identification collars. Avoid the hassle of messy monthly applications and get effective protection from Seresto.