My 1 1/2 year old won't stop playing in the litter box. Every time I turn around she's running to it and more. I can't clean without her getting into it. She goes to play with her brother in te play room and then she runs to play in the box when I turn to go to the bathroom, clean or anything else. I told her brother to keep a new on her so I can clean for little bit but he doesn't. He's staring at her playing in it and laughing. She also was te litter. I have no other place for it l. I'm not getting rid of the cat. Any ideas? I tried tapping her butt lightly but that doesn't help.