"There is no evidence that consumption rooms encourage increased drug use or initiate new users. There is little evidence that by providing better conditions for drug consumption they perpetuate drug use in clients who would otherwise discontinue consuming drugs such as heroin or cocaine, nor that they undermine treatment goals.
"When managed in consultation with local authorities and police, they do not increase public order problems by increasing local drug scenes or attracting drug users and dealers from other areas. If consultation and cooperation between key actors does not take place, then there can be a risk of a'pull effect' and consumption rooms run the risk of being blamed for aggravating local problems of public order including drug dealing."
Hedrich, Dagmar, "European Report on Drug Consumption Rooms" (Lisbon, Portugal: European Monitoring Centre on Drugs and Drug Addiction, February 2004), p. 83.