My elderly baby has a problem. She goes into her litterbox (one of those hooded ones with the swing door) and pees. Right out the door onto the floor. She doesn't get in far enough for the door to close and she never goes in and turns around. Does anyone have any suggestions? She does this when the box is clean so i know that's not the problem. I have a chair mat (one of those plastic things that go under office chairs to make them roll easier) and a rubber mat on top of that under the box. But everytime she pees, it goes onto the rubber mat and overflows. My apartment smells like pee and on occasion the pee has leaked UNDER the chair mat and soaked into the hardwood floor .