The Science of LittermaidLittermaid Automatic Litterbox not only makes YOUR life easier, but gives your cat a clean box each time every time. Sanitary litter conditions help prevent litterbox problems and provide a healthier environment for everyone. Littermaid automatically cleans your cat's litter box after EVERY use. Controlled by a computerized micro-processor, an electric eye senses when your cat has used and departed the box. Ten minutes later, Littermaids rake scoops forward, scooping the clumps and waste into a SEALED, AIRTIGHT (odor-free) container and then returning to the original hidden position. When the reusable/disposable waste container is full, just throw it away or wash it out for reuse. Littermaid Mega Litter Boxes are larger, hold 50% more litter, and work best for multiple cat households. Littermaid Elite Litter Boxes have added features such as a sensor-activated Ionic Air Cleaner that detects when the cat exits the unit, activating the ionic air cleaner until the rake cycle has ended. Elite Boxes also have a sleep timer for nighttime use that holds the rake at rest for 9 hours but allows the IONIC air cleaner to cycle on for 10 minutes every hour to freshen the air. Most cats use the Littermaid litter box with no problems whatsoever. The rake NEVER starts cleaning while the cat is still in the box. Even if your cat (or another) re-enters the box before the 10 minute timer starts the cleaning cycle, the timer will reset automatically. Littermaid Automatic Litterbox is easy to set up . No tools are required. | 