I use a litter called pa-purrrr and it is resonable, its paper, but it is in the small grainy form of the clay litters. It doesnt smell, and absorbs well, and I have had no trouble with it sticking. Cj seems to like it, he digs in it for 10 minutes at a time just to dig. It clumps so I can flush it. Overall, I like it. I found it a petsmart, a large bag for 8 bucks! (i am wanting to say 35 lbs.) It also is dustless, the clay litter would make him sneeze and his eyes water because of all the dust.