Litter-Robot EVO features the same self-cleaning, odor-reducing technology, now intuitively designed with a smaller footprint—ideal for homes with 1-2 cats. Get real-time notifications and monitor usage with the Whisker app, plus unlock more insights with a Whisker+ membership. Never Scoop Again® Compact design for smaller spaces, making it the best litter box for apartments Tightly sealed waste drawer reduces litter box odors Go up to 7 days between emptying the waste drawer for a one-cat household Brilliant LCD display for a simple user experience Includes Fence, Carbon Filter, Waste Drawer Liners (5)