Tooth powder is an extremely economical and non-toxic alternative to toothpaste. You can mix and match ingredients to your taste preference.
4 tbs Bentonite Clay
2 tbs Calcium Carbonate
1 tsp baking soda
1 tsp unrefined salt
½ tsp clove powder
1 tsp ground cinnamon
1 tsp activated charcoal (about 4 capsules)
Sift all ingredients and pour into a small jar. To use: wet toothbrush, dip in powder and brush on teeth as usual.
(Some people add stevia for sweetness, but the cinnamon and cloves are sweet enough for me. I have also seen essential oils suggested, but I would urge strong caution to taking essential oils internally, make sure you do your research before you decide for yourself.)