Hmmmm, I really don't know but wonder if it would help if you changed the litter to something that isn't so much fun to play in. I've used Feline Pine pellets for about 13 years now and have never had that problem. You might try another type of litter and see if that helps.

Another cat lover might have a better suggestion for you. I wish you luck and hope that if you do try some other type of litter or find a solution for your problem, you'll share your trials and errors with us.