What causes rust on the dishes?
Iron or manganese in the water supply can affect your dishwashing results in several ways. The dishwasher and dishes may become yellowed or have stains that are brown, red or black. These stains may be removed from the interior and dishes using RoVer Rust Remover*. Do not use this product on metal items. (This product is not recommended for use if the dishwasher has a stainless steel interior.