If you have EVER had any pets do ANYTHING on your carpets, in closets, on clothing, on wood ... You need to get "My Pet Peed"! I had two rooms that my elderly cats used as their own giant litter boxes for at least 2 years and maybe more. The smell was repulsive, especially on the screened in porch. And the bedroom became even more nasty if the weather got humid. They both crossed the rainbow bridge in 2015. A week ago, I ripped up the carpets and the under flooring was no better. I had planned to replace the under flooring before re-carpeting. But, before going that far, I decided to try this product. I sprayed in the obvious locations in the bedroom and after 2 applications the smell was GONE. I don't mean reduced - I MEAN GONE!!!! The porch was a bit more challenging. I did at least 4 treatments over a few days. Tonight I actually put water on the spots because in my experience, it was guaranteed to raise the 'perfume', and I smelled NOTHING. The same in the bedroom! I don't know about you, but I will be purchasing this product as long as pets are in my house. Yes, it seemed very expensive, but with what I saved, it was worth every penny! Can't wait for the new carpets to come - I've saved about $400 by doing this. This review is TOTALLY unsolicited. I'm speaking from FIRST HAND experience. MY PET PEED - - - ROCKS!