Our original, best-selling Boxie® plant-based formula with 30-day odor control & patented clumping technology. A natural, plant-based clumping cat litter with superior clumping technology for 30-day odor control. Our Airtight™ clumping process traps odors and provides a superior clumping experience, ensuring litter stays cleaner and dryer compared to other litters. Plus, it provides a more enjoyable cleaning experience for pawrents.