- 1 quart of 3 percent hydrogen peroxide (available from any drugstore)
1/4 cup of baking soda (sodium bicarbonate for you science types)
1 teaspoon of liquid soap, such as Ivory.
The solution needs to be mixed just before you apply it. DO NOT try to bottle it and store it as it may burst the bottle due to built up pressure. When travelling, make a kit up of unmixed ingredients so you have it when needed.