I went into this very doubtful. I've tried more "solutions" than I can remember. Here's the story; my little dog was my pride and joy, but the last 6 months of his life he had little to no control over his bladder. He did however, always pee in the same area of my hardwood floor, where it also soaked into the bottom of my couch. I have scrubbed that couch and the floor over and over, but when you walk into that room, even now - a year after he's gone, it still smells funky. 

I saw an advertisement for your product on Facebook, and thought "what the heck, I'll give it a try." The first treatment seemed to work, but after about 2 days the odor came back. I treated the bottom of the couch and floor again, this time leaving it on for quite a while, and this time it DID work. It's only been about 3 weeks, but no smell. I'm very impressed.