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.
Cleaning occurs in various commercial, domestic, personal, and environmental contexts, which differ in scale and requirements.
Cleaning is broadly achieved through mechanical action and/or solvent action; many methods rely on both processes.
Some items and materials require specialized cleaning techniques, due to their shape, location, or the material properties of the object and contaminants.
Several occupations involve cleaning, either in their entirety or among other duties.