In my house I have tried all kinds of different litter boxes and arrangements.  Some are better than others for accidents from the boys.  So far this is working well.  It was simple to set up.  One thing to be aware of is that the litter for this is crystal litter.  You buy refills that are cardboard and use those.  My cats have been picky about different types of litter, but they did not mind this. No smell so far!