Special Kitty litter is the best litter I have ever used ! We have three cats, one box changed one a day. I have used them all and from now on, Special Kitty clumping is the only brand I will buy . No little crumbs left behind that drives you crazy, 6 or 7 scoops and I'm done. One 28 pound box lasts us 3 weeks and at $7.98 the other guys can go jump in a lake.