I was skeptical but bought it anyway. This product is AMAZING! I have tried every product on the market plus professional cleaning - nothing worked on the various spots/stains. I was ready to rip out all the carpet. My Pet Peed works exactly as advertised. The stains are gone. Some were gone in one application while others took 2 or 3 but using the instructions provided, it worked! Highly recommend this! I did not notice an odor as some people have mentioned.