For your "entertainment" here 3 links to art that got destroyed by cleaners (apologies for the German): http://www.spiegel.de/karriere/putzfrau-zerstoert-kunst

For your "entertainment" here 3 links to art that got destroyed by cleaners (apologies for the German): http://www.spiegel.de/karriere/putzfrau-zerstoert-kunstwerk-in-mannheimer-kirche-a-1075479.html http://www.spiegel.de/karriere/putzfrau-zerstoert-kunstwerk-... http://www.spiegel.de/panorama/galerie-sala-murat-in-bari-reinigungskraft-haelt-kunstwerk-fuer-muell-a-954830.html http://www.spiegel.de/panorama/galerie-sala-murat-in-bari-re... http://www.spiegel.de/panorama/gesellschaft/weggeschrubbte-kippenberger-installation-die-putzteufelin-a-795709.html http://www.spiegel.de/panorama/gesellschaft/weggeschrubbte-k... So your assumption might not be so crazy after all.