Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Horrible Product-please read before you use.....

I purchased this product after our dog had a urine accident on our new carpet. I trusted the labels that said that it was safe to use on carpet. Well after that one use, my new green carpet has a nice pink spot right in the middle of the room. I have had a disaster clean up company look at it and they have said that there is nothing that I can do. I will probably have to replace that area of carpet. I really wish I could go back and not buy this cleaner- using water on the urine spot would have been better and much less expensive!!! I wouldn't even give it one star.