Gotta try this, here’s how it works..
The strawberry has natural acid and that works as an astringent to remove stains. Bonus, strawberries are full of vitamin C, it clears away plaque.

Here’s the teeth whitening formula:

Mix a (1/2 a teaspoon) baking soda with a crushed Strawberry. Crush the strawberry down to a pulp with the baking soda. Get a baby soft toothbrush and brush. Leave on for 5 minutes and rinse. Do this once a week.

Beats paying $30 for those whitening strips, right??