In addition to countertops and cutting boards, you can use lemon and baking soda to scrub your microwave. This will loosen the dirt stuck on the walls, base, and ceiling of your microwave and make it easier to clean. Place a box of baking soda in your fridge to absorb any unwanted smells, and the lemon juice can be used on the shelves, drawers, and door, leaving them sparkling and smelling like citrus. Lemon juice and baking soda also make your faucets and sink shine. While this lemon and baking soda trick can revive cutting boards and make countertops shine, there are a few items on which the two ingredients do not work well.