Drug- and alcohol-related nuisance is an important policy issue in nearly all smaller, medium-sized and bigger cities. In 2014 the Netherlands reported an increasing number of drug- and alcohol related nuisance, caused by homeless people: 45.910 cases compared to 44.161 cases in 2013 [Politie, Local Focus, 2015]. Experience and research has shown that this is a pan-European problem which many loca ...