Take a cotton swab, dip it in a cap full of hydrogen peroxide and scrub on teeth leave on for 30 seconds and then brush teeth. Do for a week straight in the morning and before bed. See amazing white teeth results! I have got to try this!(:
Personal motivation: Put a tiny bit of toothpaste into a small cup, mix in one teaspoon baking soda plus one teaspoon of hydrogen peroxide, and half a teaspoon water. Thoroughly mix then brush your teeth for two minutes. Remember to do it once a week until you have reached the results you want. Once your teeth are good and white, limit yourself to using the whitening treatment once every month or two.