O'Tink, I have more experience in the dynamics of female drug offenders, not so much males in any area - and the process of successful treatment can be VERY different, between the sexes.
But I can tell you that what was working with women addicted to drugs was a concept called THERAPEUTIC COMMUNITY. It happens inside a prison setting, beginning around the year 2000 in ICIW (Iowa Correctional Institute for Women) at least...and the success was remarkable, thorough statistical documentation through a study done by the US Department of Justice.
However, do you notice I am using the PAST TENSE here? Well that is because the program got axed in various rounds of budget cuts...so now the women are again caught in the horrific revolving door of recidivism...
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These kinds of addictive offenses CAN be intercepted and permanently reversed, but it is just not happening...not enough, anyway...we are caught in cycles of punishment, which is thoroughly proven not to work...leaving society ever more unsafe.