World's Best Cat Litter Multiple Cat Clumping Formula is very similar to the Original formula but was enhanced with an Extra Strength formula which was designed for multiple cat households needing harder clumping and stronger odor control with the addition of a natural plant-derived ingredient.
NOTE: Do not expose kittens to litter before they are 8-weeks of age.
NOTE: Do not expose kittens to litter before they are 8-weeks of age.