Sometimes stains inside your refrigerator can be stubborn. There’s a safe natural way to help you fight the battle of removing stubborn stains, plus you may have what you need handy in your home already! Baking Soda is your savior. Mix baking soda with a little water to produce a thick paste, then apply it to the stain and let it sit for an hour. Next wipe away with a damp cloth or sponge.