An effective, easy to administer treatment specifically formulated for cats and kittens over 6 weeks of age, the Johnsons One Dose Wormer is a single-dose treatment killing both Tapeworms and Roundworms commonly affecting pet cats in the UK. Easy to administer, the Johnsons One Dose Wormer for Cats and Kittens can either be fed whole or crushed and sprinkled into your pet's dinner to disguise the tablet.