These plastic food containers are great for storing dry foods in your kitchen. To use them, simply open the container, put your dry food like spaghetti or noodles inside, and then seal it up. When it comes to maintenance, just use a mild soap and lukewarm water to clean them by hand. Remember, do not put them in hot water or the dishwasher as this can damage the containers. Keep them in a dry and cool place when not in use. This will help to keep the containers in good condition and ensure they last a long time.