Tried an experiment. Had 2 (as seen on tv) products. Completely soaked an article a cat had peed on. While the product was wet, I couldn't smell anything. They dried. The smell came back. Used this product. Completely soaked the item. Couldn't smell anything. It dried. Still no smell. A week later still nothing. It's been a couple of months now. Still smell nothing. Needless to say the other 2 products are in the garbage. I will buy this forever.