Cleaning facilitated areas (dusting, sweeping, vacuuming, mopping, cleaning ceiling vents, restroom cleaning etc.) Performing and documenting routine inspection and maintenance activities. Carry out heavy cleaning tasks and special projects. Cleaning is the process of removing unwanted substances, such as dirt, infectious agents, and other impurities, from an object or environment. Cleaning occurs in many different contexts, and uses many different methods. Several occupations are devoted to cleaning.