No need for clothes pins on noses anymore with the Thornell Cat Odor-Off Soaker. The pet odor eliminator works on cat odors on multiple surfaces and works well on odors such as urine, tomcat spray, feces and more. Cat urine in carpets and other porous surfaces is a significant problem primarily because it can go undetected for a long time. The urine itself has very little odor, but once it starts to decay it becomes a problem. The first stage of decay produces amines (ammonia), which are unpleasant, but the second stage of decay is the worst. This creates mercaptans (Mercaptans are what make skunk spray smell so bad.) with a carpet this can mean the urine has soaked through the carpet to the floor or deeply into your favorite sofa. In spite of product and carpet cleaner claims this odor cannot be eliminated with detergents or by spraying the surface as the product will not go down as deeply as the urine. Simply pour Cat Odor-Off on, making certain that you have covered the soiled area completely and with enough volume to soak through the carpet or sofa reaching the odor source. Let the pet urine odor remover dry. That's it.