I have had the Cat Genie for about three months now and it is the best invention for cat owners ever. It took our two cats about ten minutes to get curious about it and a day to begin using it. Never touch litter again is a fact.
If I had to say anything negative about the cat genie it is the lack of a battery backed clock to remember settings in the event of a power outage, I have had seven power outages in the last month (lots of big thunderstorms) and everytime we loose power we have to reset the machine at the time of day we want the machine to wake up.
Even with that little inconvenience it is still the best thing on the market and worth every penny of the cost.