If you are considering buying a cat genie, stop thinking about it and just buy it. This is the most brilliant invention ever. Your house will never smell like a cat, and you will never have to touch the litter box. The granules look and feel just like regular cat litter - cats young and old have no problem making the switch.
My husband did not want to get a cat because of the smell. I showed him the cat genie on You Tube and he was skeptical. When it arrived, he hooked it up in less than 5 minutes (and he is NOT that handy) and put it through a test run. He could not believe it. We got a kitten and he never had any problem using the genie.
We recommend the unscented cartridges for the genie.