"I can sympathize with some of the criticisms of the Cat Genie. Initially we had a problem getting some of the kitties to use it. Two of the females took to it right away but the others ignored it. Therefore, I decided to ignore Cat Genie's suggestion to keep the old litter box available. BOOM! Instantly they all started using it, no problem. All went well for approximately two months when suddenly it stopped draining. I tried everything in the Genie User Manual to no avail. I called Customer Service. The young man on the other end walked me through a dozen different tries to fix it. The grossest part of it was when he said that I probably needed to disassemble it and wash out the macerator! Disgusting! That is the mechanism that acts like a blender to enable the solid waste to be discharged. The next morning I took it out to the back yard and disassembled the whole thing and washed it out with vinegar and lots of water. When reassembled and returned to the bathroom it worked about two more times and then, kaput! Nothing! I called Genie and they immediately said not to worry, they would send out a new motor the same day by overnight delivery. Guess what? They did! The next day the new motor arrived and the switch out took about three minutes. The problem turned out to be that the Genie was not perfectly level. We had placed it in the guest bath bathtub. (It is used rarely, so seemed like the perfect solution.) The problem is that the bottom of a bathtub is not level, so that water can drain out of the tub. The solution? Three shims, placed on the down side on opposite sides of the front to make it perfectly level. I know because I used a level. Once a day I use an old plastic pitcher to rinse down the tub. The water actually runs under the Genie and voila, all clean! By the way, we take in rescue kitties and at the current time have eight (8) kitties ages 1 ½ to 10 years old. All has been fine for over four months now. I do agree that the toilet gets disgusting, particularly since I have it set to run four times a day. I keep a disposable toilet bowl brush next to the toilet and give it a swoosh when I go in to rinse down the tub every day. It would be nice if they developed a gizmo that would flush the toilet each time the Genie finished the cleaning cycle. I have discovered that if you flush the toilet immediately the gunk does not stick to the sides of the bowl. Another improvement would be to make the cartridges refillable. Then a gallon could be purchased and simply refill the cartridge. Even with the problems, it is still better than cleaning out a litter box once or twice a day. All in all a wise purchase! Particularly since, we were using 40 pounds of litter a week with the old litter box. As an accountant, I did the math and discovered that the Genie pays for itself in approximately 18 to 24 months depending on how often it is set to cycle through. Eight paws up for PetNovations!"