Allegedly, numerous customers had been incapacitated with date rape drugs or other drugs in order to charge exorbitant amounts to their credit cards; those who complained were blackmailed with video footage. Then they solicit customers from the open door or from behind a window. 31 Also in 2007, authorities in Berlin began to close several apartment brothels that had existed for years. 19 20 The Pascha continued to flourish however, and now has evolved into a chain with additional brothels in Munich and Salzburg. Here workers sell sex in a room that they rent by the day. 32 The economic downturn of 2009 has resulted in changes at some brothels. 85 André Schulz, head of the German Criminal Investigation Association warned in July 2016 of "an escalation of turf wars between enemy biker gangs in Germany". As a gesture of appreciation, we have come up with the Reward Program that aims to benefit our loyal clientele in the form of value based offers and discounts. Most cities however established "Sperrbezirke" (off-limits zones) and charge the street based workers an amusement tax, that in the city of Bonn for instance is paid by the sex workers at parking meters, six euro for a period of about eight night hours.