If you're one of those people who likes their teeth pearly white, then read up.

- First, the obvious, brushing your teeth or chewing sugarless gum after meals (and while resetting your computer's video card ) and snacking on crunchy fruits and vegetables will definitely help because it increases saliva production to clean your teeth.

- Carry a touch-up whitening product with peroxide and brush in onto teeth after drinking coffee, wine or eating berries. If it stains your countertops, it will stain your teeth.

- Brush your teeth once a week with this at-home treatment: Add just enough hydrogen peroxide to a little baking soda to form a paste to polish away discoloration. You can also use a store-bought deep-cleaning toothpaste with silicas instead.