Bob Martin Clear Flea Collar for Cats is the trendiest way to repel fleas and ticks for up to 6 weeks. Clinically proven€¦ This collar will provide protection for up to 6 weeks, repelling both fleas and ticks for on cats and kittens from 12 weeks of age. How to use€¦ Remove any previous collars from your pet. If any other flea product has been applied within the last 4 weeks, check with the manufacturer if it is safe to apply a flea collar. - Grasp both ends of the S-Clip and firmly pull until the clasp is released. - Place collar around your cat's neck leaving a gap of approximately 2 fingers between the cat's neck and the collar, to allow for growth on a growing cat. - Fasten the collar and cut off, and dispose of any excess collar. Wash hands after handling the Bob Martin Flea Collar. Give your home the All-Clear€¦ In addition to using Bob Martin Flea Collar for Cats as a preventative, all pets in the home should also be treated with a suitable wormer product every 3 months. 1- Treat pets for fleas 2- Worm pets : fleas carry worms 3- Treat your home Bob Martin Clear offers a comprehensive range of pest control products in a variety of applications to suit your needs; tablets, granules, spot ons, sprays, collars, powders, as well as a range of Pesticide Free options.