Youre having him change the locks. Hes going to keep copies of the key.I'm not having him do anything. Mom called and asked why he left the door unlocked tonight, he admitted they were in there today. But said he'd change the locks anyway, but that won't solve anything. He'll just keep a copy. Plus, he's got keys to mom's side and there's a connecting door between them and he can still access it from her side.