5. Aluminum cookware
Believe it or not, putting your aluminum cookware in your dishwasher might be the biggest mistake ever. Because the hot water in dishwashers can stain the surface of aluminum and most of the detergents are also pretty harsh, they can damage the finish. False disposable aluminum pie plates can leave marks on neighboring items as they slide around throughout the washing cycle, so even if you don’t care about their appearance, avoid putting them in the dishwasher.
Moreover, if you care about your dishwasher and you want to keep it in good condition for as long as possible, make sure to read the manufacturer’s guidelines and thoroughly rinse the pots and pans.
