A little nicer than washing your mouth out with soap.
Water: 1 quart (32 oz)
Non-iodized salt: 1 teaspoon
Baking soda: 1 teaspoon
Stove
Pot or kettle
Teaspoon
1 quart mason jar (or container / measuring cup)
Boil the water for at least 1 minute.
Wait for the water to cool.
Transfer the water to a containter.
Add salt and baking soda.
Stir or shake.
If using a mason jar, fasten the lid then dance a bunch.
Rinse and gargle in the same way as with mouthwash.