I clean my stained dirty white shoes with baking soda and hydrogen peroxide to make it look new again. 1 tbsp. baking soda 1/2 tbsp. hydrogen peroxide 1/2 tbsp. water small mixing bowl old toothbrush Brush off the dirt in your shoes. Mix the baking soda, hydrogen peroxide and water in to the mixing bowl until it becomes a paste. Brush the mixture in to the surface and put it under the sun for 4 hours or until the mixture is dry.