Add the baking soda to a small cup then add the vinegar.  There is a small chemical reaction, it will bubble up for a minute and settle down.  Use a clean cloth or paper towel wipe down the yoga mat.  Wet another cloth or paper towel with water and wipe off the baking soda residue.  Spray with an essential oil water if desired, I used jasmine eo in a 3 oz. water spray bottle.  It’s all fresh and clean and smells great.  I clean mat once a week but that’s up to you!  🙂