The Litter Robot is the automatic, self cleaning litter box \'that really works\'. When your cat enters the litter chamber (globe) a weight activated sensor detects the presence of your cat. After 7 minutes a clean cycle starts with the slow rotation of the globe in a counter-clockwise direction. The rotation of the globe sifts and separates clumps from the clean litter (clumping litter) and deposits all waste in the large capacity drawer lined with a standard kitchen garbage bag. The globe then returns to its home position with a clean, level bed of litter ready for the next use. The Litter Robot has no rakes or wires to jam, clog, or break. Its simplicity and durable construction ensure a long life of service. The Litter Robot operates on 12VDC and is easy to set up - just add litter to the globe and plug it in. Backed by an 18 month warranty and 30 day money back guarantee on purchase price.more info