Cleaning a dishwasher with bleach can help remove mold, mildew and tough stains, but it’s not suitable for every dishwasher interior. Bleach can damage a dishwasher with a stainless steel tub or any stainless steel parts, so consult your user manual before using it for cleaning. If you opt for cleaning with bleach, make sure you don’t use it at the same time as vinegar or baking soda.