The companies, instructors, and technicians listed below have been trained by the owners and staff of Modern Cleaning, inventors of the first Chemical Free Cleaning methodology used as the exclusive residential cleaning regimen at Castle Keepers of Charleston, SC. 

CFC Instructors train with Modern Cleaning for three days in the application of the methodology as well as the organizational training, supervision, and inspection strategies unique to Chemical Free Cleaning; they also hold the Certificate of Completion as a Chemical Free Cleaning Technician.

CFC Business Managers train with Modern Cleaning for two days of intensive business strategy, examining all aspects of a successful business transition and focusing on revenue growth, quality service metrics, continuous improvement plan, and captial equipment plan as significant differences from the traditiona cleaning company model. Owners/leaders will leave with a draft of an implementation plan for their business.

CFC Technicians are trained by their company's CFC Instructor (listed below) using the Modern Cleaning methodology. CFC Technicians complete a 4-hour intensive training regimen and must achieve a 75% satisfactory score on an objective 60-question examination through SchoolofCleaning.com .