National Maintenance Supply & Service works with each client to design a janitorial program that is tailored specifically to each ' needs. We have Area Managers assigned to every location we service, and can accommodate any of your businesses cleaning needs big or small. We are able to design a custom janitorial program specifically tailored for each ' needs. Our scope of work ranges from janitorial service and window cleaning, to stripping, waxing, and carpet care. With a specialty in full floor restorations including tile and grout repair, concrete polishing and high-heat pressure washing.