My wonderful cat of 10 years became constipated and coughing, like he had a hairball. I had used the Hartz Hairball Remedy before even though I knew the danger so their flea products which we never use. My cat only had some of the hairball goo three times. He became lethargic and not eating as much and still wasn’t using the bathroom. We took him to the vet on Thurs.,two weeks ago. The vet said his intestines were twisted and his chest looked congested. This cat had been healthy his whole life and had never once been outside. So the vet gave him antibiotic shots and steroids. Each day for the next 3 days he became worse and worse. He would not eat,drink or go to the bathroom and he started breathing very fast and heavy. The vet saw him everyday from Thurs to Sun, and continued with the same meds and fluids. My cat just got weaker and weaker,started drooling occasionally and by Sun. he was in respiratory failure and we had to say goodbye to him. I am devastated at the loss of him and now wonder did the Hartz product cause any of this? Vet never could tell us what happened to him.