Bob Martin 2 in 1 Dewormer for Cats and Kittens fights all common intestinal worms such as roundworms and tapeworms. These types of worms can be passed on to humans easily as well as causing unwanted distress to your feline friend! If left untreated worms can cause sickness, weight loss, weakness, listlessness, irritation, dehydration, pneumonia, and heart and liver disease. One dose of Bob Martin 2 & 1 can help prevent your cat getting worms and will cure all worm infections instantly. Use for cats over 12 weeks old.