Baking soda or Bi-carb soda for whitening teeth?

Which one? I bought bi-carb soda and benzoyl peroxide. Is this right for teeth whitening? -------------------- Buy a Crest Pro Spinbrush. I bought one a week ago for $7.99 [plus tax] and my teeth are about 3 shades whiter by just using ...
Teeth Whitening - http://teeth-0-whitening.blogspot.com/

Source: Google Alerts - whitening