Reduced heat, unscrewed electrical contacts so the mobiles could not be charged.
Attempts to get young people to stop hanging out evenings and nights in the stairwell of a car park in central Skellefteå failed.
- It really had no effect, states Magnus Stenberg, manager of Skellefteå Industrihus.
Used to stop graffiti
The type of sound scare that is now hung up in the stairwell has been used for a long time in England, for example, to get rid of graffiti and vandalism, for example.
Swedish metropolitan municipalities have also set them up.
Not without criticism:
In Gothenburg, there were protests against the use of methods that cause pain and discomfort.
In the Stockholm suburb of Tensta, criticism came from private individuals against the sound scare.
Has given smaller youth groups
In Skellefteå, Skellefteå Industrihus believes that they set up the sound scare as a pilot project that will be evaluated after one year.
- Now we have been running for four months.
Everyone involved sees a positive improvement with smaller youth groups staying here, it is a win, says Magnus Stenberg.