Teeth Whitening??

What's a cheap way to get your teeth whitened? (crest/colgate whitening strips etc) And how long will it take for your teeth to get whiter? And if you have ever used teeth whitening products, what did u do and how were the results? Thanks a lot! Best answer gets 10 points!
--------------------
this worked for me To use the baking soda in brushing, first clean your toothbrush thoroughly. Now, shake your toothbrush fairly dry. Next dip the toothbrush in the baking soda so it is completely covered in the white powder. Now brush your teeth thoroughly, scrubbing all sides. It is not really harmful to brush until there is some slight and occasional bleeding of the gums or from between the teeth. This practice after each and every meal can whiten teeth remarkably in two months. You should then continue this habit throughout your life. Or, try brushing with hydrogen peroxide. You can try brushing with hydrogen peroxide. I would recommend you not swallow any. Put a small puddle of peroxide into a Dixie cup. Cover the brush in peroxide by dipping the brush as you tilt the cup. Now brush thoroughly as with the baking soda. This type of brushing can be done once a day. Spit any fluids; don't swallow at any time while brushing with hydrogen peroxide. Check with the hydrogen peroxide manufacturer for degrees of warning for this use. Though brushing with hydrogen peroxide is in common use, you should be well informed of any concerns there may be given the amount of peroxide that might be used and therefore that there would be any risk of swallowing. Rinse completely after brushing with water and then a good mouthwash. This habit will help whiten teeth in a period of two to three months or more if kept in a daily regimen. Combine baking soda and hydrogen peroxide for a double tough whitening formula. Hope I helped Good luck xD
Source