Over my 20+ years as a Cat Servant I've tried most of the litters mentioned so far, and since I tried Wal-Mart's Special Kitty have stuck with that. 28 lb box is $6.85. Scooping twice daily, I've never had to totally empty and refill the pan, though I do add a little baking soda on a rare occasion. Although the litter is marked as scented, it has little or no odor itself and does not leave my furbabies smelling of added fragrance, both requirements for my allergies.