McKowski's Maintenance System provides a premier level of commercial cleaning services to San Diego's and Inland Empires highest profile office buildings, production and manufacturing facilities, retail centers and Homeowners Associations. McKowskis is an award winning company defined by unparalleled customer service and employee satisfaction. MMS offers a vast array of services including but not limited to day porters, floor and carpet maintenance, pressure washing, handy-man repairs, construction, tenant improvements and construction clean up.