Fresh Step Odor Shield Light Weight Advanced Multi Cat Clumping Litter is light on the arms yet heavy on litter box odor control. Two 11.5 lb jugs of this lightweight litter equals a 44 lb carton of regular clumping litter (1). This proprietary lightweight litter blend is an advanced formulation with more ammonia block technology (2) for powerful odor control 15 days. Made with naturally strong lightweight clay enhanced with odor fighting power, this litter forms tight clumps for easy scooping and is compatible with most automated litter boxes (3). FEBREZE is used under license from The Procter & Gamble Company or its affiliates. (1) Based on litter liquid absorption vs. Fresh Step Clean Paws. (2) vs. Odor Shield Light Weight. (3) To confirm compatibility, please contact your automated litter boxs manufacturer before use.