LitterMaid LME9000 Elite Mega Advanced Automatic Self-Cleaning Litter Box
Product Features 
* Self-cleaning litter box for extra-large cats or multiple-cat households
* Infrared sensor detects and rakes waste away 10 minutes after cat leaves
* Timer automatically resets upon re-entry; paw-cleaning ramp; “on/off” switch
* 4 carbon filters, 4 waste receptacles, and ionic air cleaner for reduced odor
* Measures 28 by 20 by 8-1/2 inches
Product Information
Designed for extra-large cats or multiple-cat households, this litter box actually cleans itself, depositing waste into the disposable container, which seals away the waste and odors. When the container is full, just throw it away and replace with a fresh one.
For multiple cat homes the “mega” size of the LME9000 is the perfect solution. The unit comes with 4 waste receptacles and 4 carbon filters and an ionic air cleaner to eliminate odor. The paw cleaning ramp reduced the amount of litter tracked outside the box. Light sleepers will appreciate the sleep timer that can be set to prevent the unit from activating during the night.
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Littermaid Automatic Self Cleaning Self Flushing Litter Boxes
Amazon.com Review
“Ideal for a household with a large cat or more than one cat, this big, self-cleaning litter box eliminates most odors while keeping the litter pleasingly fresh for tabby. It’s ingenious in design: a cat entering the box triggers a sensor; the sensor sets a timer that counts off 10 minutes; then a rake runs through the litter, scooping out clumps and depositing them in a plastic container at the box’s end; the container is automatically sealed until the next cat visit, when the raking cycle opens the container for another deposit. (Twelve reusable, disposable containers are included, each 13 inches long, 4 inches wide, and 3-1/2 inches deep.)
The litter box can be plugged into a wall socket (AC adapter included) or operated on eight D-cell batteries (not included). It comes with a durable carpeted ramp that leads a cat into the box and cleans its paws on the way out. For safety, the rake stops and reverses at the slightest touch if an object gets in the way.
If a cat re-enters the box before the initial 10 minutes have elapsed, the timer automatically resets. The litter box is made of hard plastic and measures 29 inches long, 8-7/8 inches high, and 16-3/4 inches wide. For proper operation, it requires premium, clumping litter but does not need as much as a nonautomated litter box of the same size. For cleaning, the litter tray can be detached. Instructions for acclimating a cat to the box are included. –Fred Brack”