@videograndpa Yes, because it can detect when a cat has used it. It then waits 7 minutes for it to clump (and the cat to leave) and then it cleans itself. So the cats end up having a clean box each time.

I end up replacing the trash bag where the litter is dumped about twice a week, but the litter box alerts me with a blue flashing light when it detects that it is full.