Do you mean the battery operated type that self-scoops once the cat has left the litter box? At one point, we had one, and my husband began calling it the "shitapult" if that answers your question.
You have to use hard-clumping litter with them (according to the instructions), and the problem is, sometimes the litter will kind of stick to the bottom of the litter box. You know how it is. Anyway, then the automated scooper comes along, and then when the stuck chunk of litter comes loose.... FLING!... off it goes, flying 10 feet from the litter box, spewing litter and cat pee everywhere. Which is gross. But as an ADDED bonus, if the cat is around to see things catapulting out of its litter box, then the cat doesn't want to go anywhere near the litter box ever again. Fun times.
Yeah, I wouldn't recommend it.