Commercial cleaning is a broad term predominantly used by cleaning companies who earn an income by being contracted by individuals, businesses, or corporations to carry out cleaning jobs in a variety of premises. Cleaning companies can be found in virtually every town and city in the world, with a higher concentration in affluent regions. Typically these companies market their services via a professional sales force, advertising, word of mouth, or websites. A janitor, custodian, cleaner or caretaker is a person who cleans and maintains buildings such as hospitals, schools and residential accommodation. A Janitors’ primary responsibility is as a cleaner. In some cases, they will also carry out maintenance and security duties. A similar position, but usually with more managerial duties and not including cleaning, is occupied by building superintendents in the United States. Cleaning is one of the most commonly outsourced services.

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