For a natural and environmentally friendly alternative to cleaning your teeth, skip your regular toothpaste and avoid the packaging waste. Instead try making your own.
Here’s a recipe I found on http://www.howstuffworks.com/

Toothpaste: Mix 3 parts baking soda with 1 part salt. Add 3 teaspoons of glycerin. Add 10 to 20 drops of flavoring (peppermint, wintergreen, anise, or cinnamon) and enough water to make a paste. Spoon into a small, refillable squeeze bottle.