"I have tried 4 or 5 different products trying to get the old urine smells our of our carpet from my black lab's potty training accidents. Nothing had worked. I thought I'd try this product, and since there was a mony back guarantee, I figured I didn't have anything to lose. I followed the instructions, sprinkled it on the carpet right before we went to bed, and then vacuumed it up the next morning, and just like that, the smell was gone! Finally my house smells fresh and clean again! 5 Paws up for Clear the Air!"