First thing you should know about us is that we do NOT want any clumping type litter at all. (Our vet discourages the clumping kind because some kitties and doggies eat litter -- yuck -- and he has had to increasingly perform surgery on very ill pets with "concrete" in their stomachs and intestines).

So, we swear by a mixture of any cheapo clay litter and FELINE PINE. Our kitties love FELINE PINE and we love the way it absorbs odors.

BTW, we scoop and flush down the toilet. Our neighbors do the same and ended up with major plumbing bills when their clumping litter plugged the pipes.