the contract may be for commercial (janitorial) or residential (housekeeping) work and is commonly written to have the cleaning occur on a scheduled basis. a commercial cleaner is able to provide services to any retail, office, or industrial establishment. while a residential cleaner is more of a housekeeping role by providing standard cleaning services and also making the residence look tidy. especially if the cleaner being sought is for residential housekeeping duties. asking friends and family in the area is the best way to find a trustworthy candidate.