HOW IT WORKS Crystal litters are highly absorbent and pawrents are only required to scoop waste on a daily basis. After scooping, the remaining litter is mixed around in the litter box for up to a month, meaning your cat is stepping into litter containing ammonia and other waste particles. Without probiotics, your cat is stepping in their own waste, tracking it throughout the home and ingesting it during bath time. Using a probiotic crystal litter means that probiotics are working 24/7 to eliminate bacteria at a microscopic level, meaning your cat is essentially stepping into a new box of litter after every use. RESULTS Proprietary MicroDry™ Odor Absorption Crystals trap and neutralize odors for 40-day odor control Easy Upkeep™ — only scoop solids, let the probiotics handle the rest! Probiotic solutions work 24/7 to clean litter after every use Exceptional Odor Control Veterinarian Recommended Safe & Gentle on Paws Satisfaction Guaranteed The Boxie® Promise We're committed to delighting our customers and their feline family. We stand behind each product and each shipment with a 100% hassle-free resolution.