Instruct: Classify Amazon reviews into positive or negative sentiment
Query: THIS STUFF IS POISON! BURNED ANIMALS SKIN!

Horrible stuff! Burned BOTH my cats skin & I have worked with animals for 15 years, know how to apply properly. I have NEVER seen a product do this to an animal before. Next morning both cats were itching & scratching even more than ever....poor guys were trying to soothe their burns. They were both lethargic the next day, slept WAY more than usual, the younger cat did not eat all day which is unheard of! By day 3 the skin was bright purple & skin was actually flaking off. When I called my vet the 1st question she asked was "did you use PurrScriptions?". It's happened to other people...WHY TAKE THE RISK IF YOU LOVE YOUR PET? WHY do you think it's on sale????