Clean the boxes once in two months to get rid of all types of stains. Keep this guide handy to clean your storage boxes.
Scrape off any hard residue stuck on the surface. Clean the surface with a clean cloth.
Mix ½ a cup of white vinegar and ½ a cup of baking soda in a container. Pour the mixture into a clean, empty spray bottle and add warm water. Baking soda and vinegar are natural cleaners that will absorb the stains.
Spray the cleaning solution on the stained boxes. Let them sit for 15 minutes. Pick a scrub pad which is suitable for the surface and clean the boxes.
Blot the residue away with a dry cloth and leave the boxes to air dry.