Floor cleaning is a major occupation throughout the world. The main job of most cleaners is to clean floors.
Swabbing by Rudolf Kremlička
A wet floor sign
Carpets cleaned and hung out to air. Kathmandu, 1979
Cleaning is the process of removing unwanted substances, such as dirt, infectious agents, and other impurities, from an object or environment. Cleaning is often performed for aesthetic, hygienic, functional, safety, or environmental protection purposes. Cleaning occurs in many different contexts, and uses many different methods. Several occupations are devoted to cleaning.
Hand washing (part of hygiene)
A dry cleaning machine
Ultrasonic parts cleaning
Carbon dioxide snow cleaning in an aerospace setting