Treating individuals who are addicted to drugs or alcohol and have ended up in the criminal justice system has proven effective in preventing future drug related criminal offenses by those who do receive treatment. For criminal justice clients in Oregon, Illinois who do partake in drug and alcohol rehabilitation programs, even un-voluntarily as is sometimes court ordered, these clients have a significantly better opportunity of addressing the root of the issue so that they can stay abstinent and away from the streets drug related criminal activity. The costs to the criminal justice system related to these drug related criminal offenses is also affected beneficially when criminal justice clients become helped in drug rehabilitation centers in Oregon, Illinois instead of incarceration or other harsh punishment.