We are desparate for answers. We have three cats. One is a year + and the other two are sisters both 6 + months. We wormed the kittens when we brought them home and discovered this summer one of them had worms again. She was throwing them up in her food. We took her to the vet and that night she pooped a ton of dead worms (sorry about being graffic). We just saw her throw up again last night and there were tons of LIVE worms in her vomit. We took all three cats to get wormed again. WILL THIS EVER END?? How can we stop it from coming back all the time?