It's more expensive (obviously), but the Doc Elsey's Ultra is pretty darn good so far. It clumps up like you wouldn't believe so it should last a while. It's also the lowest dust i've ever seen in a clay litter. It has a bc wry fine dust that you can just barely feel on your cat's coat. There is no smell either. The early TSC litter wasn't even this dust free. Another thing i hated about the TSC litter was it absorbed poop smell well, but then once the poop was removed the smell remained. I remember having brand new litter in a clean box, end up smelling terrible almost immediately. I'm not sure what happened at TSC but the location near my house still has plenty of clumping litter. It's just not very good anymore. It's hard to expect much when it only costs $5.99 for 25#. The Dr Elsey's Ultra is $18.49 for 40#. The lack of dust makes it a good buy. It is still cheaper than WBCL, which is outrageous. The Chicken Crumble really is the cheapest option but my girls refuse to use it now.