Cats are most commonly affected by two different types of worms; tapeworms and roundworms. Worms can cause several symptoms in your cat, you may notice that they are losing weight, seem sleepier than normal or have had a change in their toileting habits. If your cat uses a litter tray, then you should easily be able to see the worms in their faeces. If you do spot worms, you should ensure that your cat is treated immediately. Wormers are a reactive medicine so it is advised that you should worm your cat every three months, this will ensure that that any worm, larvae and eggs that are in their system are killed. Wormers do not, however, prevent a new infestation from occurring. If your cat likes to bring you little "gifts", then they are more at risk from getting worms, and it is especially important to keep on top of regular treatment. We stock a range of the best cat wormers, including easy to use spot-on treatments in our online store.