The LME5500 Elite Basic Littermaid Self-Cleaning litterbox is our most advanced design for single cat households. Cat owners can now avoid that most unpleasant chore with the LitterMaid Elite Basic Self-Cleaning Litter Pan. With a new, quieter motor, this litter box has infrared sensors that send a rake through litter to scoop up waste and drop it into a resealable receptacle just seconds after your pet has finished using the box. The heavy-gauge plastic, 2-piece box helps eliminate most odors and has a removable rake for easy cleaning. Over 4 million cat households cant be wrong!