I've had a Cat Genie for over 5 years now and love it to pieces. Unfortunately, over the last year, it's started to malfunction and pieces are breaking. I've been fixing pieces here and there by hand, but I think it's just time for a new one, sadly. But I'm happy to fork over the money, as I've had a regular litter box for the last couple days, and wow! I forgot how much litter stinks and tracks everywhere. It's really nasty stuff, so I can't wait for my replacement Genie. In fairness, the granules do track just like litter, but it's WAY more sanitary and also easier to sweep up. Plus, it allows me to go on 3 to 4 day trips and leave my 3 cats at home, not worrying that I'll have to pay someone to come by and scoop a nasty box every day.
For new buyers, make sure you run a Maintenance Cleaning on a regular basis.. I learned that the hard way the first year. I have 3 cats and run a maintenance cleaning every couple of months.
Also, all 3 of my cats adopted the genie right away. No issues for them understanding what it was for. Now I can say that they love litter a whole lot better though.