I put together a quick mouthwash to keep by my toothbrush on the bathroom sink. It contains creosote and water (1 to 10 ratio) plus about 1/8 oz of yerba mansa. Creosote kills bacteria and tastes not unlike Listerine. The yerba mansa is soft and healing to mucosa.
For anyone who has purchased Creosote from the Holy Scarp store, you can use this to make your own home-brew mouthwash just follow the ratio above. How's it taste? Well I already said it tastes like Listerine but really it is g-d awful! Actually it's a matter of taste. I like it, Mikey hates it. You will have to decide for yourself.