Sky also had tapeworm and I actually saw a piece of it wiggling out of his bottom. He was shaved down when I adopted him so I could see this area better. He came from the Humane Society and he had fleas which they treated him for but they didn't bother to treat him for worms. I didn't have to treat any of my other cats and I've been using advantage on all of them every month for years so I've never had a flea problem since. Good luck.