I just bought a spray bottle of Nok Out and I am very impressed with it. I have tried almost every brand on the market to help with cat urine odor. Not one of them ‘worked’. used NokOut to clean all the spots (carpet and tile) where my cats had ‘accidents’; cleaned/sprayed their litterbox; basically I cleaned/sprayed everywhere there were issues with my cat. All the ‘odors’ are gone. When I walk into my condo, I cannot smell anything….this is a good thing.