For an easy, cost-effective tooth whitener, mix some baking soda in water. A mild abrasive, baking soda polishes stains away so that your teeth look clean, bright and white. Consider dipping a wet toothbrush into some baking soda to create a paste.
The bark from a walnut tree is a great way to naturally rub off the stains on your teeth. If you use this bark on a regular basis, it can remove the off-color film that can accumulate on your teeth from using tobacco or drinking certain beverages. Eventually, your teeth will become brighter as the stains fade and your natural tooth color shines through.
If you have untreated cavities or gum problems, you really ought to see a dentist before starting a teeth whitening treatment. If you do have dental issues, take care when considering a whitening system. Your dentist can help you whiten the teeth, and tell you if you should.