If using, mint leaf, powder in a blender, food processor, or coffee grinder.
Mix all the ingredients in a bowl or pint size mason jar and store in a small glass jar with a lid.
To use, wet the toothbrush, dip into the powder, brush, and rinse.
This will last indefinitely on the counter since there are no liquid ingredients and all of the ingredients naturally discourage bacterial growth. You can customize the powder to your taste and all of the herbal ingredients are optional. Bentonite or baking soda would actually work alone or together as a tooth powder. You could also add more cloves, mint and cinnamon for an even more concentrated powder.