Here's how Sara's friends conserve diaper pail real estate:
If you find yourself emptying the diaper pail much more often than you'd like, some friends had a strategy I thought was a good idea. Dirty diapers go into the diaper pail. Wet diapers, which don't smell nearly as much, go into a trashcan. When you empty the diaper pail you'll have to empty the trash as well, but it should not be nearly as often.
Honestly, I think diaper pails are a waste of space, money, and fresh air. We could never keep ours clean enough…after a while the stench made us relegate it to the back deck, and, at that point, we found it just as easy to collect the day's diapers in a plastic bag at the back door and then knot and throw the bag into the outside trash can every evening.