Diversco will not only clean your office but also keep it safe. The company provides facility management and security services, as well as temporary staffing. Its facility services include cleaning, equipment maintenance, and landscaping. Security guard services are provided through the company's Spartan Security unit. Diversco sells its services both individually and in bundle packages. Founded in 1969, the company serves clients throughout the US in the commercial office, education, food, manufacturing, and warehousing sectors. In mid-2010, Diversco was acquired by diversified facilities services contractor ABM Industries.