Here's more: (THis is from Diaperpin, BTW)
REMOVING URINE SMELL
Include baking soda when washing or soaking your cloth diapers.
If you use baking soda in the wash or soak, make sure to use vinegar in the rinse, This will help restore the pH of the cloth diapers. Otherwise your baby may end up with diaper rash.
According to Vicki Lansky author of Baking Soda : Over 500 Fabulous, Fun and Frugal Uses You've Probably Never Thought of, baking soda works with liquid detergents to whiten and brighten laundry. It does not boost powder detergents.
Related Article: Baking Soda or Washing Soda?
VINEGAR IN THE WASH
Many parents have complained that using vinegar in the wash leaves their diapers remaining smelly. Actually it is more effective to use baking soda in the wash and add vinegar to the rinse. See our washing recommendations for more information.
Hint: Consider using vinegar in the rinse cycle of all your laundry, not just the diapers load. Also consider buying distilled white vinegar by the gallon for general household cleaning. Melodie Moore's book, Vim & Vinegar, is a wonderful resource for learning how to use vinegar to replace expensive cleaners for floors, refrigerators, furniture, laundry, copper and stubborn stains.
Related Article: Vinegar in your cloth diaper wash. Two sides of the Coin