She scratches at her litterbox.. Every time she does her business she will scratch at the lip of the litterbox. It's not from having an enclosed box because she does it with both boxes. It isnt the cleanliness of the box because she does it even with brand new litter. She had kittens, I kept one and my parents kept one. Her kittens are following in her footsteps and doing the same thing. It's getting irritating because no matter where the box is, it wakes me up. Is this something I will just have to put up with, or is there a way to teach her its ok to not be so obsessive?