We've had decent results with the diluted Bleach, but it still lingers. We are putting the boys in the bathroom (as small as it is) because it has Linoleum flooring today to see how it goes. Crating is out of the question, Frisco bites at the crate trying to get out, and Codi will just pee in it. This weekend we are tearing apart the bedroom to try and clean every inch.....I did notice that the bedroom furniture is also starting to swell from being wet so often.....these guys are really becoming a serious problem......now I gotta buy new furniture !!!