I have seen posts all over the internet about the Hartz flea and tick stuff being really dangerous for pets. I will never use anything off the counters for fleas or ticks on my pets, only the stuff I get from the vet. However, I haven’t seen anything about the Hartz shampoo for hairball control for cats. Is it dangerous? Has anyone had an experience with this? Please answer, I am worried because I didn’t really know about how dangerous Hartz can be until after I gave my cat a bath.