Fill a clean, empty litter box with 3-4 inches of litter. Litter seals in and destroys odors, forming rock-solid clumps. Remove clumps and solid waste daily to keep the rest of the litter fresh. Add m

ARM & HAMMER Clump & Seal Multi-Cat Complete Odor Sealing Clumping Cat Litter with 14 Days of Odor Control, 18 lbs.