It took my cats awhile to try the self-cleaning litter box.   I set it up near their old litter boxes and didn't clean the old ones, hoping the cats would then try the new self-cleaning litter box.   They didn't.  Instead they pooped in the corner of the room!  agh!  so then I emptied both of their old litter boxes and removed them from the house.  I placed the new self-cleaning litter box in their old one's spot and presto! they have started using it.  So it took awhile, but now they are adjusting to it. [This review was collected as part of a promotion.]