I spent months trying different ways to remove it. In the following Know Techie guide, it is discuss the best way to clean a washing machine inside and out, along with the five items you can use to remove mold, odor, and build-up effectively.
Use Vinegar and Baking Soda to Kill Mold
Vinegar and baking soda are safe to use because they are organic. They are also very effective at removing limescale and deodorizing. Although vinegar is an amino acid, it is only a mild type of acid and does not kill all mold. If you have a foul washing machine, use the more substantial items recommended below. If you have a top-loading washing machine, let the water heat for a few minutes and add one quart of white vinegar. Let it simmer for 1 minute to combine the parts, and then close the cycle to let the mixture soak for 1 hour. Let the machine finish the wash cycle, then add 1/2 cup of baking soda to the wash cycle.
Use Oxygen Bleach Powder to Remove Greases
Look for a detergent that contains various enzymes that remove greases, such as amylase, protease, lipase, or mannanase (you may need to check the organization’s website for a list of products). Oxygen bleach powder can also often be added to a typical laundry detergent. Seventh Generation laundry detergents use these types of enzymes in addition to promoting oxygen bleach. Please note that the chemical compounds are not safe for use on wool …