Fill litter box 2"-3" deep with litter. Scoop clumps and remove waste daily to ensure maximum freshness and odor control. Add more litter to maintain depth of 2"-3". On a weekly basis or when litter becomes saturated, empty litter box, wash, dry and refill with fresh litter. Always wash hands thoroughly after handling the litter box. Some cats may need to be weaned into new litters. Gradually replace current litter with Nature's Miracle litter until complete transition occurs.