The nontoxic, natural cleaning powers of baking soda have been known for generations, and many people leave a box of the stuff in their refrigerator to try to fight odors. But many of us aren’t using it correctly. There are some things you should know about how baking soda works to get real results and the best value for your money.
Baking soda, which is really 100% sodium bicarbonate, eliminates odors by neutralizing strong acids and stabilizing strong bases ? the root causes of most bad odors.
According to Leslie Stein of the Monell Chemical Senses Center in Philadelphia, there aren’t any real-world studies that prove the odor-eating effectiveness of baking soda, but there are reams of anecdotal evidence and lessons from the lab.
To get the most out of baking soda, follow these three guidelines.
1. Replace it often
Most of us leave an open box of baking soda in the fridge for months, if not years. But experts recommend changing out a fresh box every one to three months.
Baking soda neutralizes odors by turning them into inert crystalline salts, according to Ray Brown, a research and development scientist with Church & Dwight, the company that makes Arm & Hammer. Over time, the salts build up (that’s the crust that develops on the top) and baking soda loses its effectiveness. Brown says the odors work their way through the box, and stirring it up doesn’t really help.
After its odor-fighting ability is exhausted, the used baking soda will still have enough power to use for cleaning counters, trash cans, or drains, Brown says, but don’t use it for baking or personal care.
