My brother moved into a rental that smelled strongly of cat urine which was a huge stressor for him. The landlord did not acknowledge the smell but agreed to have the carpets cleaned. The strong cat smell was obvious to John & Francine when they entered and she contacted the landlord to urge using enzyme. As I understand it, he refused but they used it anyway. Thank goodness, since the smell has substantially reduced. There is still an odor, but nothing like it was. They worked very hard to remove the stains and smell to make the rental healthier and more welcoming for the new tenant. They were friendly and very forthcoming with lots of informative information. A huge thanks to them for caring and doing the right thing.