THIS STUFF IS AWESOME!!
We've tried a  lot of products on various surfaces for puppy smells, to varying degrees of success. We have a backyard of rock, with a section of artificial grass just beyond the concrete patio. I use a cleaner specifically for the grass, and while it works, I'm not that impressed with how long it lasts. I ordered this to see if we could cut down on the smells closer to the house, and specifically around the pillars that my male IG like to mark. The day it arrived, I sprinkled some around, honestly with not very high expectations. About an hour later, I walked by the rear door, and suddenly realized there was NO PEE smell. For the first time, we are able to open the window over that porch and let fresh air in. I only wish they made a carpet product.
Rating: 5 stars