This stuff is a miracle in a bottle. Seriously, we have a senior cat who had been peeing in the same spot for a while in our son's room and this stuff is taking the smell out. I spent a whole day scrubbing and rug scrubbing the spot and after getting this in the mail today, I used it for the first time and I'm blown away. I also used it on a spot in the basement our other cat had been peeing outside the litter box on a cement floor and it's working on that too! Next is our bedroom where I know our dog has snuck in some pee spots and our senior cat too. Thank you so much for making this product! Whoever says otherwise isn't using this right and I can't understand how you can't. You spray it and let it dry 12-24 hours, then use again if needed. No scrubbing!