My great ant and uncle who were wealthy and lived in Zürich would put 300Fr in cash by the entrance area of their house. The idea being that if a junkie would break in, they would just take that money and leave.

Before the legalization a common stereotype would by junkies breaking into places stealing a few things or destroying things while searching for valuables.

Not sure if this is true or a sensible defense mechanism. However it shows something about the attitude during that time.