Remove all items from inside the refrigerator. Check everything for spoilage or expiration and discard any food that is no longer good.
Pull out any removable pieces such as shelves, drawers and trays. Wash them in hot, soapy water using a standard dish detergent. After washing, rinse with a gallon of water that has one tablespoon of liquid bleach added to it.
Mix a handful of baking soda into a pan of hot water until it is dissolved. Use this solution to wipe down the walls and floor of the refrigerator. If baking soda is not available, you can substitute equal amounts of white vinegar and water. Rinse with the bleach and water solution.
Leave the refrigerator open for 15 minutes to allow it to air dry. Replace the shelves, drawers and trays. Place the food back inside.