this is how I get two bottles of mouthwash out of one
ingredients
8 ounce bottle of your favorite mouthwash
4 ounces peroxide
4 ounces water
directions
When you run out of your mouthwash save the empty bottle, or any 16 ounce bottle will work. When you buy a new bottle, pour 1 cup of mouthwash into the old bottle. Now you have two bottles with 8 ounces in each. Next pour 4 ounces of hydrogen peroxide in each bottle. Next pour 4 ounces of water in each bottle. Now you have two 16 ounce bottles of mouthwash!!