What a time-saver (and a life-saver!)
Roll, tilt, and you're done. What a great, simple concept! No more having to bend to scoop out individual clumps of poop or pee and spend 5 minutes or more in doing so. It all comes out easily into a tray which you can then dispose of into the toilet or the garbage (depending on which litter type you have, some are not septic tank safe). I use it with Precious Cat litter and the clumping works great. All you have to do is add litter as is necessary when it runs low. No need to dump all the litter, add liners and add new sand, this litter box contains odors very well thanks to its lid. Make sure all the snaps are in place unless you want to risk having sand go on your floor..

Litter box is no longer a dirty box!
I inherited a smaller cat and all her periphernalia including a rather large litter box with a top on it. Because my cat is very messy in her use of the litter box, it was always necessary to keep the top on just to be able to keep the litter in the box. It was always a depressing thought knowing that the litter box had to be cleaned because the lid always had to be removed in order to get at its contents and I didn't have much room to manuever in once the lid was removed, not to mention all the dust that was raised by sifting through all the litter. But now I have the Omega Paw Self-Cleaning Litter Box and clean-up is clean, quick, and easy. Simply roll the unit to the right (you can hear the solids once they're past the grid), then roll it back to the left; pull out the little drawer and dump the contents into a bag--once! It's a real time-saver and makes having a cat much more enjoyable.

Flawed execution of a great concept
Great concept, but as others have pointed out, the execution is flawed. The item is huge but usable space for the cats is cramped so our two weren't very fond of it (and these aren't fussy cats). Unless you roll it several times a day, the scoop drawer overflows and spills litter all over as you pull it out, so you have to hold a garbage bag under it when emptying. The plastic fasteners holding the unit together were weak and easily slid into the unlocked position, so we narrowly avoided a few disasters until we learned to double check them each time we rolled it. We'd read numerous glowing reviews of this product and ended up being so disappointed that we went back to a conventional litter box after a few weeks. Less hassle for us, and the cats were happier. No wonder the price keeps dropping.... I'd love to see them (or someone else) improve on it - perhaps I'd try "Version 2.0".

The best we've used
After trying two of the expensive Purrforma model PURRFORMA PLUS XLG HOODED WH, I tried this unit Omega Paw Self-Cleaning Litter Box, Regular, Green and Beige. It worked so well, I bought a second (we have four cats). It is easy to service, the cats love, it uses far less litter.

great product
After spending big bucks on several of the so-called "automatic cleaning" litter boxes, I came upon this product and decided to give it a try. It can't be any easier or more efficient!! Love it!! and so do my cats. No expensive pans to buy, and no part to break down and render the product useless.