In a glass container (only glass, no plastic!), mix the water, colloidal silver, thieves oil and peppermint oil.
Pour about a half-ounce into a small glass cup or shot glass, put in your mouth and swish for as long as is comfortable. Do NOT swallow the mouthwash.
If you find that the mouthwash is too strong, add more water. (If the mixture makes your lips feel too hot or numb, put a little olive oil or coconut oil on your lips and around your mouth first. I usually coat with lanolin, which is part of my bedtime routine anyway.)
*You must use therapeutic-grade oils, preferably from Young Living. I cannot promise that any oils except the ones I use in this recipe are safe to ingest.