Why choose Duluth Cleaning Contractors.... We have been cleaning for the past 30 years. Since we began our business, the goal has always been of being better than our competitors by providing better service, and being actively involved with the buildings that we clean. We provide service to our customers in Duluth, Superior, Cloquet, Two Harbors, Hibbing, Virginia, Deer River and Biwabik. One of the most valuable assets to our company is our employees. We work hard at retaining quality employees, the longer an employee works for us the more valuable they are to the buildings that they clean because of their experience and years of service. Many of them have been with us for over a decade.