it's funny you should say that -- i did use two boxes & my cat did use one for each! with this new litter being so light -- i can pick up the litter box no trouble -- so i only use one box, but he still pees in one corner & poops in the other -- go figure --

When I had an inside cat the vet suggested two litter boxes. The litter was changed every other day, the boxes were washed with soap and water outside once a week. I never had a smell problem but the boxes were kept in the utility room with the vent fan running 24/7.

I use tidy cat with the black lid. Doesn't clump real well, doesn't have a lot of dust either. I have three cats and clean out the box once a day. Not any stink. My cats do not go outside.

A lot of what you smell is the wet clay. the corn bog doesn't have the clay smell and it much better and not that expensive at Wal-Mart.