Once a month, I add a cup of Distilled White Vinegar and a cup of baking soda during the HOT cleaning cycle. I pour them directly into the drum. Then, I add about ½ cup of vinegar and ½ cup of baking soda into the detergent dispenser.
For icy steps and sidewalks in freezing temperatures, mix 1 teaspoon of Dawn dishwashing liquid, 1 tablespoon of rubbing alcohol, and 1/2 gallon hot/warm water and pour over walkways. They won’t refreeze. No more salt eating at the concrete in your sidewalks