I have three cats, one five years old, and 2 kittens that are five and a half months old. My two kittens we got a week apart, (they are not brothers, but they act like it!) and my slightly older kitten wont stop peeing on leather, specifically the leather couch in the living room, although he doesn't mind the leather chair, the leather ottoman, or any piece of leather horse equipment left out. He's been doing this since we've gotten him, and it has started to get infuriating! We make sure he has a clean litter pan, and although he does have his food in the same room it is on the other side of the room. Every night, we lock all three cats in their litter room and we let them out in the morning. I keep a spray bottle near the couch, but it doesn't stop him. I give him treats when he goes in the litter pan, but it doesn't stop him. I grab him when I see him peeing on the couch and put him in the litter room, but I don't know if he understands why. I honestly think he just thinks that leather equals litter, and I know there isn't any medical reason why he is missing the box. Anyway, does anyone have any tips? It's getting out of control.