If you don’t want to wash the outside of your coffee maker with soap and water, it’s also an option to use a vinegar spray. First, fill any spray bottle with white vinegar. Do not dilute the vinegar. Then, spray some of the vinegar onto a cotton cloth. Wipe down the surface of the coffee maker. Use more vinegar if necessary. Finish by rinsing with water..Many coffee aficionados have a common query regarding the most effective way to clean a coffee maker. There are several ways to do so, out of which the best and effective method is cleaning with vinegar. As we all know, vinegar is a natural household liquid with no toxic compounds or residues..You may notice your coffee becoming increasingly bitter if you don’t clean the brewing basket and other parts regularly. The moist environment of leftover coffee grounds can lead to the growth of yeasts, molds, or bacteria. Mineral deposits, especially if you have hard water, will narrow the water channel and your coffee maker will work more and more slowly if they are not removed..Chances are you don’t clean your coffee maker as often as you should. In fact, of these household machines contain yeast and mold, according to one survey..