Mark Exner has been in the Industry since 1974. He has over 38 years’ field experience. Mark is a standards writer for the newly upgraded IICRC S100 Carpet Cleaning Standards. He is a staff instructor for more than eight IICRC Approved Schools. You will find Mark very down to earth, and he will make things simple and easy to learn. Mark believes in a relaxed classroom setting and you will find this an enjoyable and profitable learning experience.