We fostered a kitten over the summer, and our cat did NOT take too kindly to that. Even though we tried to keep them separate, our cat sprayed a wool area rug in the room where we moved her scratching post, to warn the kitten to stay away. We tried to get the smell out with various carpet cleaners and the steam cleaner, but it remained. We then treated it with the Bissell Pet Stain & Odor pre-treat stuff and steam cleaned the rug again. Voila! Odor gone! I was otherwise going to have to throw out the gorgeous rug that I designed the room's decor around, so I am thrilled with this product. Thank you, Bissell, for saving my rug!!!