Features The Lever Activates An Automated And Noiseless Pull And Refresh Process That Quickly And Efficiently Refreshes The Litter Pan, While Collecting Waste In One Easy Operation. Waste Clumps Are Deposited In A Lined Collection Bin For Easy Disposal. Replenishing The Litter Is Also Easy, Simply Open The Maintenance Access Door And Add As Needed. Integrated Carbon Filter Absorbs Odors A Large Swinging Door Allows Cats To Enter And Exit Easily Clear-View Access Window Allows Easy Monitoring Of Litter Pull-Out Waste Bin Collects Waste Clumps For Easy Disposal