Good day. The work of the prominent social psychologist, Robert Cialdini PhD, will be very helpful for your campaign. Let me suggest you go to the following internet links:
http://www.theatlantic.com/health/archive/2014/08/littering-and-following-the-crowd/374913/
http://www-personal.umich.edu/~prestos/Downloads/DC/pdfs/Krupka_Oct13_Cialdinietal1990.pdf
http://www.cityethics.org/content/littering-and-government-ethics
http://www.influenceatwork.com/wp-content/uploads/2012/02/E_Brand_principles.pdf
http://www.boston.com/bostonglobe/magazine/missconduct/2008/08/the_psychology.html
Hope this all helps you. His work and suggestions does have a positive influence.
‹Joseph
