disinfecting and exterminating activities; cleaning and maintenance of swimming pool; cleaning of bottles; cleaning of industrial machinery; cleaning of the inside of road and sea tankers; cleaning of trains, buses, planes, etc; exterior cleaning of offices, factories, shops, institutions and other business and
professional premises and multi-unit residential buildings; other building and industrial cleaning activities, n.e.c; cleaning of windows, chimney, and fireplaces, stoves, furnaces, incinerators, boilers,
ventilation ducts and exhaust units; street sweeping and removal of snow and ice