I have two cats that use the box quite often. We've tried different foods, etc, to no avail.
I bought the ScoopFree Automatic hoping that it would cut back on my scooping 1-2xs a day, but it's really become nothing but a pain.
I've tried everything from the hood, to the Forever Tray to different litters, but no matter what, I seem to spend twice as much time cleaning this thing out and taking it apart so I can get all the poop out, as well as changing the litter in the Forever Litter tray than I did with a normal litter box.
The regular trays that came with the box that proported to last 30 days lasted 3 with my days before they smelled to high heck and the box needed to be scrubbed from the abundance of pee that couldn't be dried by the crystals.
I know a lot of people have had great luck with this box when they have one cat that goes only once a day or so, but for my cats, this has been a dismal failure.
I've now spent almost $200 for the box, hood, Forever Tray, etc. when a $8 tray and clumping litter would have been a lot easier.