"I've tried EVERYTHING to get the smell of cat urine out of my mattress from when my cat had a UTI. I bought all the top recommended neutralizers, all sprays or liquids of some kind, and nothing worked. Nearly at my wit's end, I looked up more products online and did some more research. It finally made sense to use a non-liquid to remove the smell. I bought this product as a last resort and sure enough, it worked on the mattress! Don't waste your time with liquids; this is the stuff!"