Any suggestions for a clumping litter to use for a handicapped cat? Our 14 year old cat is recovering from being attacked by a dog 2 1/2 months ago. One rear leg is still pinned and he drags it. We have an oversized litter box which he uses fine. But, the Tidy Cat I've used is dusty and he drags a lot of it out. Would like to find something that didn't stick to him so much. Thanks.