A "Cleaner" is a person or device that removes dirt, dust, and other unwanted substances from surfaces. Cleaners can work in various settings, including homes, offices, and industrial spaces. They use tools like brooms, mops, and vacuum cleaners to maintain cleanliness and hygiene. In addition to manual cleaning, there are also chemical cleaners, which are substances designed to break down grime and disinfect surfaces. Common examples include bleach, detergents, and disinfectants. These products help ensure that environments are safe and healthy for occupants by reducing the presence of harmful bacteria and allergens.