Spend $25 and get free shipping. Box gets great reviews.
Amazon.com: Omega Paw Self-Cleaning Litter Box, Regular, Green and Beige: Kitchen & Dining
'Easily keep the cat-litter box clean with this roll-away litter box. The unit quickly self-cleans, while controlling dust and containing odors. Simply roll the litter box to the right until the top touches the floor, and then roll it back to the upright position. The unit's internal mechanism deposits the clumped waste into the pullout waste tray for easy disposal. The system works only with clumping litter, and the waste tray separates clumped waste from clean litter, so clean litter is never thrown away. The litter box makes it easy to provide the cat not only with a clean litter box, but also with privacy due to the covered pan design. The litter box also helps save money--no more scoops, liners, or filters to buy. With a silver top and blue base, the litter box measures16-1/2 by 19 by 16 inches with a 7-by-7-1/2-inch opening.'
Omega Paw Self-Cleaning Litter Box $15.70 at amazon FSSS eligible 
