Bummer that they're marking your couch, ugh. You could try an enzyme cleaner, but I'd also block off their access from the area for a good while too, so they get out of the habit of peeing there all the time. Best of luck!
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~ °¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |