First, avoid a couple of the big mistakes. Don't wash it from the dishwasher. Wash yourself. Wash every aspect in warm mild soap and water. Use dishwashing soaps like Dawn or Ivory or some other mild dish soap. Rinse clean before using. Harsh abrasive cleaners and scrubbers can damage or tarnish the finishes and inside the containers. After a while, they even alter the flavors in the stored foods and beverages.