Bleach and water mixture must be used promptly, discard after 24 hours. Label container, keep out of reach of children. Do not use color-safe bleach. Never mix bleach with other chemicals. Gallon ratio: 5 tablespoons (1/3 cup) household bleach to 1 gallon of water. Quart ratio: 4 teaspoons bleach per quart of water. Solution must remain in contact with surface at least one minute. Higher bleach ratios do not sanitize better, but harm people and property.