Diaper pails aren't the only baby item that tend to stink over time. Diaper bags and hampers also absorb musty smells that grow stronger as lil ones add more items to them. Though a good scrub down or a round in the washer may rid the smells temporarily, an old-fashioned, household item will extinguish the stench.
The same inexpensive baking soda that helps keep your refrigerator and freezer odor free can also do the job in tight quarters. Simply fill a small cotton sack with the powder and a few drops of lavender oil and drop it in. If you are nervous of spills, Munchkin's Fresh Totes ($5 for two) add a decorative touch.