Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good idea but it doesn't really work

I bought this because my cat had peed on the carpet and the smell was nauseating. I literally drenched the area with the product, covered it in plastic and waited two days. After it dried the smell came back. I tried again (twice!) and I still haven't gotten rid of that smell. Replacing the carpet is not an option (I'm in a rental) and I'm at a loss as to what to do next.Also, I had a bit of trouble with the vendor I bought this from (Entirely Pets) so if you're going to try this product, choose a different vendor.