When I have encountered the urine problem in my furniture or carpet, I get out the shampooer, load it with half warm water and the other half apple cider vinegar and after mixing the two together, I shoot this solution into the soiled carpet area, or use the attachments for doing the couch with and it neutralizes the smell and further reduces the chances that the animals will return to the same place.
I also use apple cider vinegar for flea control in the carpets, which are soft shag, a perfect hideaway for visiting fleas, and if the solution you use isn't so strong that every time you smell it you think of salads, then you have the right combination that will kill the fleas and the eggs.
Powered by Yahoo Answers