To bleach your teeth at home, make a paste using baking soda and peroxide,which will help to whiten your teeth if you use it on regular basis. You can also rub strawberry or orange peels against your teeth in order to whiten them. Visit http://www.ehow.com/how_2203132_whiten-teeth-home.html for more details.
Homemade remedies don't really work. Baking soda has no whitening effect at all. The hydrogen peroxide you buy in a drugstore isn't strong enough to whiten teeth. If you could get it strong enough it could cause serious damage to your gums. Do what vorne said. Go see a dentist. They have a special type of gel peroxide that you put into molded whitening trays that allow you to whiten teeth without killing your gums. '