Pros: The unit really does smell nice WHEN it works properly.
Cons: Read this review along with the others.
My fiance and I purchased the Cat Genie because we thought it would be a much easier and more sanitary alternative to traditional cat litter. Man, were we wrong! I will admit, the unit worked well for about the first eight months; however, occasionally, it would bake the cat poop and cause the entire house to smell. Also, considering we used the routine maintenance cartridges, the entire house smelled like an amonia factory, but the worst was yet to come. After eight months, all hell began to break loose because the unit would come on whenever it wanted, which usually meant it would begin its cycle at 2 in the morning and rouse everyone, including the baby. After this began, the actual bowl began to sieze up and, eventually, stop turning at all, which meant all of the cat crap would sit in the bowl, turn to soup, and then bake. Unfortunately for us, we didn't catch this until we came back from vacation, and when I walked in the house, I thought the sewer had backed up. We called Cat Genie, and they swore it was the the processor and sent a new one; it didn't fix the problem. About 4 months ago, we decided that the Cat Genie was MORE unsanitary than our old litter box, so I took it to the local dump. In turn, I went to KMart and bought a simple sift-style litter box for 40 dollars, and let me tell you, it works great. Of course, I have to empty the hopper and refill the litter, but my house doesn't smell like ammonia or baked s**t. I wish I had known this before I bought the Cat Genie because I could have saved almost 1,000 dollars, if you take into account the actual unit, accessories, and the supplies (Oh, my god, the supplies will bankrupt you; you should plan on spending at least 40 dollars a month to keep it going). Overall, the Cat Genie is a good concept, but the company still has several flaws to correct with this machine. My advice would be to read the other reviews and beware.