Answers:
mix saline beside some lemon liquid (freshly squeezed) and rub it on your teeth.dont do it more than once a week coz it also make your teeth sensitive.i usually use sensodyne after this remedy
use a hose cloth and wipe hydrogen peroxide directly to your teeth, you may hold to wipe them a few times to gain rotten any stains
baking soda is best grandma adjectives ways used it lol