Established in 1979, Merry Maids is one of the largest home cleaning franchise networks in the world. Located in Glendale, Ariz., the company specializes in oven cleaning, refrigerator cleaning, window washing, packing/unpacking, wall washing, cabinet cleaning and furniture treatment. Its outlets offer cleaning services for ceramic tile floors, grouts, hard water spots, miniblinds as well as other upholstery and carpets. The company provides products under different brands, such as Terminix, ServiceMaster Clean, AmeriSpec and American Home Shield.