I'm sorry to hear that you are having those problems with Katie. It can be very frustrating. For no apparent reason, my Romeo had peed on my down comforter, not long after I brought him home. I was so worried about him doing it again, or smelling just a hint of
the pee on the blanket, had I gotten it dry cleaned, so I just threw the blanket away. I know that is not a practical solution, I can't imagine what I would have done if had peed on the couch. I would think that if you used some natures remedy to clean the stain out, and then used some detterant as mentioned before,it may work. Sorry I couldn't have been of more help! Good luck!