My 1yr old cat became lethargic after few hours of putting hartz guard plus on her, my other cat was fine. By morning she was vomitting and by evening barely walking and wobbling. The next day she lost use of her front legs and walked on her knees, I thought she broke them in a panic I took her to the vet. Vet was suspicious about the product but said nothing to me about all the dealths and illness it casues, I took her home and bathed her with dawn, although she was drinking she was not eating or going to the bathroom. By day 3 she was barely hanging on would not stand, I brought her to the vet where she later died. The cause was acute kidney failure, which I read can be caused by so many things but the timing of me putting this product on her is just too coincidental, after reading all these stories I have to think it killed her. This is just so awful, why is this stuff still on the market, I wish I had googled it first.