What You Need
Your dishwasher simplifies the daily routine of cleaning mountains of dirty dishes and cookware, but over time, soap scum and long-forgotten food particles build up in these hard-working appliances. This dirty environment not only provides a breeding ground for germs, and it reduces your dishwasher's efficiency.
To keep your dishwasher in peak condition, it needs a deep cleaning once a month. Doing this will help prevent mineral deposits and hard water stains, as well as musty odors from accumulated grease, food debris and soap scum.
Despite advice on the internet, cleaning a dishwasher with vinegar can actually lead to irreversible damage. Vinegar is nearly the same pH as sulfuric acid, and it can break down the rubber gaskets and hoses inside your dishwasher. It's important to note that some commercial dishwasher detergents are also acidic and may even contain vinegar. Not the best choice for dishwashers.
Similar internet tips swear by using a cup of baking soda as the best way to clean a dishwasher, but this can increase the alkalinity of the water inside. This can cause more scaling on the interior walls and in the plumbing which ultimately, is one of the things you are working to remove when cleaning. Also, not a good choice.
You want to use a product like Simple Green's Lime Calcium Surface Residue Remover that is specifically formulated to remove tough mineral buildup and hard water stains without degrading rubber gaskets or increasing the alkalinity of the water in your dishwasher.