Meet Litter-Robot 4, a totally redesigned version of the highest-rated self-cleaning automatic litter box for cats. Reimagined inside and out, Litter-Robot 4 is the next generation of revolutionary cat care appliances. With an all-new design engineered for multiple cats and enhanced app-connected smart features, Litter-Robot 4 offers unmatched cleanliness and odor control while helping you keep kitty healthy and happy. Monitor real-time waste drawer and litter levels with the Whisker app. Compact, sleek design features wide opening and comfortable space for cats of all sizes. Safe Cat system ensures accurate cat detection and enhanced safety for kittens 3+ lbs. Wi-Fi enabled, Self-Cleaning Automatic Litter Box.