We just moved into this house and the lock is actually a childproof device the previous owners installed. I didn't completely disengage the lock and when I pulled the door shut behind me it went back into the lock position. I think I'm going to try to the Bondo idea. The door is painted white and, since it's just an out-of-the-way sort of door, it doesn't have to look perfect. If that fails, I'll just replace the entire door. I liked the contact paper idea - but I think the hole is too big for that.