Beaphar Soft Cat Flea Collar contains an insecticide that kills fleas on your cat and prevents their return for up to four months. Effective and comfortable, Beaphar Soft Cat Flea Collar provide fashionable flea control, and can be adjusted to fit any cat. Suitable for cats and kittens from 12 weeks of age. Complete with silver bell. 95% of the flea's lifecycle is in the home. When tackling a flea problem, in addition to treating your pet always use a household insecticide, such as Beaphar FLEAtec or Beaphar Extra Long Lasting Household Flea Fogger for your home.