Johnsons 4Fleas Tablets for Cats and Kittens provide fast and effective flea control, killing adult fleas within 24 hours. Containing the active ingredient Nitenpyram, these tablets are safe to use alongside other flea and worm treatments and leave no residue on your pet’s coat or in your home. Available Options: Pack of 3 Tablets Pack of 6 Tablets Key Features: For cats and kittens from 4 weeks of age Starts working immediately to kill fleas within 24 hours No contra-indications – safe with other flea and worm treatments Leaves no residue on coat or in the home Can be given whole or mixed with food Simply administer the appropriate dose to your cat, either directly or mixed into food. For best results, combine with a long-term flea prevention product and treat the home environment to break the flea life cycle.