If you have dirty sneakers or canvas shoes, enlist the help of baking soda to make them look like new again! Combine 1 tablespoon of baking soda with 1/2 teaspoon of hydrogen peroxide. Add enough water to form a thin paste. Using an old toothbrush gently scrub the shoes. The peroxide will safely whiten the canvas fabric while the baking soda scrubs away stains and scuff marks. Thoroughly wipe off with a clean wet cloth to remove any paste.