Tea Tree Therapy Cinnamon Toothpicks are made from birchwood trees treated with Tea Tree Oil and Menthol.Ê Cinnamon (oil of cassia) is added to provide a zesty invigorating flavor.Ê Tea Tree OilÕs natural antiseptic properties help freshen breath and kill bacteria that causes plaque and tartar.Ê Their long-lasting flavor can be an aid to those giving up smoking.