text: how can i get rid of yellow stain on my teeth? what stuff can get my teeth white..anyone knows?   you can use peroxide and baking soda found in your house w/ a bit of salt. it tastes gross, don't swallow it...but it works well and is affordable. make sure the peroxide hasn't expired and that the baking soda is fresh and not out of the box that has been in the back of your refrigerator for a few years.