Donley Building Service, 1487 Cochise Dr, O Fallon, MO 63366, US

Founded in 1969, Jani-King is one of the largest commercial cleaning franchise businesses with more than 12,000 franchisees. Through a global network of more than 115 regional support offices worldwide, the company undertakes contracts for housekeeping, property maintenance, rug care, day custodial services, construction cleanup, and pressure and window washing. Its capabilities include trash collection, vacuuming, laundry management and biomedical cleaning programs. Jani-King serves hospitality industries, educational institutions, entertainment facilities, restaurants, retail markets, manufacturing units, government organizations, and health care, research and development centers. The company conducts training in professional cleaning services and management. It has been recognized as the No. 1 Commercial Cleaning Franchise Company by Entrepreneur magazine. Jani-King is headquartered in the Dallas metropolitan area and maintains one of its additional franchise locations in St. Louis.