If you plan on treating your dog or cat for fleas, talk to your vet and read these stories before applying Hartz. There are multiple instances where pets have responded adversely to the products, in some cases dying. Hartz agreed to remove a flea product for cats and kittens in 2006 based on similar adverse reactions, but according to the stories from angry pet owners (warning, they will make you want to hug your pet), there are still plenty of problems with current Hartz products.
