9. Soda
Not only is soda sugary, or highly acidic even when it’s diet, but it’s often also dyed a strong color that will turn your teeth that same shade. Your smile is yet another reason to switch to plain water.

10. Red Fruit
Naturally occurring red dyes like those found in pomegranates, cherries, and other berries are strong and will stain the white enamel of your teeth. What goes for the whole fruit also holds true for pies, jams, or juices made with these fruit so avoid, swish with water or use a straw when you can.