Question: how to use baking soda and hydrogen peroxide to clean grout?
Answer: Add Hydrogen Peroxide and Dish Soap A good ratio is ½ cup baking soda, ¼ cup hydrogen peroxide and one teaspoon dish soap. When you apply your mix, let it sit on the grout for about 10 minutes. This allows the mixture some time to loosen the dirt. Then gently scrub and wipe the surface clean with a damp cloth.