Skip the scoop and experience ultimate convenience and unbeatable odor control with the ScoopFree Crystal Pro Self-Cleaning Litter Box - a revolutionary system that takes the hassle out of daily litter box maintenance. Designed to give you a truly hands-off experience for up to 30 days. The advanced crystal litter formula locks in odor 5 times more effectively than traditional clay, and a light alerts you when its time to replace the tray. A hood gives your cat privacy while reducing litter tracking, and a health counter monitors your cat's usage, helping you identify possible health issues.