Professional Carpet Cleaning Blacksburg, Christiansburg and Roanoke. Upholstery, Tile and Grout Cleaning. Our mission at Global Clean is to provide our customers with a healthy indoor environment by removing many of the indoor contaminants. This includes dirt, grime, odors and irritants that trigger allergic reactions.Throughout our history we have developed superior technology and processes with one goal in mind – a healthy indoor environment! We are the choice for many homeowners, realtors and businesses.