ok, this may sound silly, but conan and i have tried every litter known to man (between the cats and when i bred exotic rats) and the best litter for cats hands down is the PRESIDENTS CHOICE No Name Brand clumping kitty litter. ive never seen a litter that clumps so well and masks smell with absolutly no perfumes.
we went away for a week and i filled the box with fresh litter, and the lady that was supposed to be kitty sitting never changed the litter. lets just say, we got home, and didnt even get a chance to check the litter till the next day, never even thought of it, because it didnt even smell.
what a litter!