Actions, programs, projects and interventions of harm reduction related with drug-consumption in Catalonia and Spain are focused in people that use drugs and in its impact in the community. There are some experiences involving legal-drug sellers addressed to minimize the impact of tobacco or alcohol use. Otherwise, the preventive actions with persons that deal illegal-drugs is normally inexistent, although there are some experiences in other countries. The objective of this research is to access to information about life styles of illegal drug-dealers and analyse the possibility of engagement in preventive and harm reduction actions related with drug consumption