Posey has a bad habit of being a naughty kitty sometimes and likes to pee on the floor instead of in the litter box. After trying several other cleaners that claimed to be an enzyme cleaner and eliminate odors, I was not very optimistic, but thought I would try this one any way just to see. The results were immediate! The cat urine smell was eliminated! And I believe this prevented the cat from going back to marking the same spot. Now if only I can get her to stop marking other places throughout the house. Not only does this cleaner work, but it is all natural with the use of essential oils and does not contain harmful chemicals for me or my kitty. I feel safe using it in the house, know that it works, and my house is left with a pleasant fresh smell!