Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sergeant's Gold Should Be Illegal

I bought Sergeants Gold because it was cheaper and it was sold at a reputable store therefore I assumed it would be fine. If I had bought this online and saw all of the reviews I never would have purchased it. I put it on my cat as directed, and she began scratching all of her hair off in the area where it was applied. A vet bill later and at least my cat didn't die as noted in some of the other reviews.My vet noted that she has seen a lot of issues with this product, and that she has also seen it end in death for other animals. I don't understand how this company is in business or how. I really regret not having researched this product more before I used it.