When I tried it with my boys they started just using the bottom floor (where their litter pan is) as a potty spot. I guessed that was better than nothing. But, then I moved their igloo to the bottom floor. And now they faithfully potty only in the box... Maybe I just got lucky with them. Or maybe it worked because there isn't a lot of floor space on the bottom floor hehe. But I think it really helps if you have a drastically different floor cover for the regular area to the litter pan. I use fleece cloth for the cage, and in the litter pan I use Critter Litter. It really helps with the smell too. I think the key is to designate areas for potty, sleeping, and eating. And just keep moving those poopoos to the litter pan and they will eventually get the picture. You just have to be consistent.