What can I give my cats to get rid of tapeworms. I have used the regular wormer from the store for worms monthly, diatoms in their food on a weekly basis and still see a bit of tapeworm "peeking out" on occasion. Don't know if the dog has them or not. Also some of my cats are "going naked" some scratching and hair falling out. All animals are outside not inmyhouse pets. Any bright ideas? I have purchased ivermectin injection for grower and feeder pigs, 0.27% sterile solution, with a dose chart on back of 0.5mLper 10# of body weight. It says you can use it on ranch-raised foxes for ear mites. I have had some success with putting a couple drops of ivermectin on the back of the neck of my cats in years past to stop the ear mites. Any help is appreciated.