Building cleaning; Cleaning of building sites; Cleaning of buildings (exterior surface); Cleaning of buildings (interior); Cleaning of commercial premises; Cleaning of domestic premises; Cleaning of industrial premises; Cleaning of property; Cleaning of public buildings; Advisory services for cleaning; Cleaning consultancy and advisory services; Cleaning services; Domestic cleaning services; Industrial cleaning services; Janitorial cleaning services; Office cleaning services; Preservation of buildings (cleaning, maintenance, and repair); Provision of cleaning services; Window cleaning