The intervention in relationship to prevention and treatment of the criminal behavior, mainly of that one related to drug addiction is one of the challenges of the Justice System. The purpose of this study was to show the efficiency of the prosocial orientation in the jail system and in other places with abusers of multiple drugs during the period of cleanning. The sample were 19 inmates of Villabona (Asturias) Jail, recidivist and with an age aver­age over 30 years old. The results do not show statistical significance, but a social effi­ciency that allow ordering the necessary steps to get it.