Thanks to feline instinct, most adult cats only need to learn where the new litter box is located. First, be sure to completely empty your litter box and clean it thoroughly, with antimicrobial soap or bleach solution. We recommend one litter box per cat. Confining your cat to a small room initially is the best way to foster good litter box habits. Make sure the litter box contains enough litter for digging and burying—about three inches of Cats Incredible™ is ideal. Scoop the box of solid waste and clumps at least once per day.