The short answer Switch litters gradually over 7–10 days: mix 25% new litter into the old for a few days, then 50/50, then 75/25, then 100% new. Change nothing else — same box, same location. If your cat protests, go back one step and slow down. Why cats resist new litter Cats choose litter boxes by texture and smell. A sudden switch from fine clay granules to larger tofu pellets feels wrong under their paws, and some cats will simply hold it or go elsewhere. This isn't stubb