Beaphar sparkle cat flea collars contain an insecticide that kills fleas on your cat and prevents their return for up to 4 months effective comfortable and oh so sparkly the collar provides fashionable flea control and can be adjusted to fit any catcollar comes in either black red or blue this is an assorted line so if you order it well pick a colour at random for your petcaution do not use any other flea control products on your cat whilst using this collar or within 7 days of remo