This beats the bad tasting 100% straight baking soda method:
Crush a few fresh strawberries into a scrubbing pulp that you mix with a pinch of stain-removing baking soda and enough water to make a paste. Apply the mixture to a soft-bristled toothbrush and polish for a few minutes once every 3 or 4 months. (More often can erode tooth enamel.) The astringent malic acid in strawberries helps buff coffee and red-wine stains from teeth.
Expert: Mark Moyad, MD, MPH
