what is the best and most effective inexpensive way to whiten teeth?

ok, so i have tried everything to whiten my teeth and nothing seems to work.
--------------------
i think the best way for u: Homemade Teeth Paste Cheap, safe and effective natural way to keep your teeth white over time The recipes of teeth whitening paste is : 3 Teaspoons of hydrogen peroxide 2 Teaspoons of baking soda 1/2 Teaspoons of table salt Some toothpaste Be used in place of regular toothpaste 1 or 2 times a week. You will get a whitening results in a month. made & use with image http://www.teethwhiteningbest.com/teeth-…
Source