When it comes to foreclosures, the most common problem that arises during the process of fixing it up and reselling or renting out, is pet odors. Whether it's cat urine or anything else that has become trapped in the floor, the carpet, the walls and everywhere else, it's upsetting. Cat urine, for example, is extremely strong, and sticks to just about everything. It embeds itself into wood subfloor, padding and the carpet itself. More people have problems with cat urine seeping its way into the floorboards than anything else. Scrubbing the carpet, if that's what the issue is, with a product that is supposed to get cat urine out can take hours, cost a pretty penny and end up just not working at all.