Criminal justice client rehabs are available as being a considerably better option than prison time or heavy fines for individuals who have already been convicted of any sort of drug or alcohol related crime. For example, someone who has been found guilty of driving under the influence of alcohol or drugs may qualify for rehab services because of their problem as an alternative to serving time in jail. The judge could even order that the individual receive treatment, either alone or along with other sentencing. First-time offenders in particular will often be given the opportunity to pick a criminal justice client rehab as opposed to other sentencing, and it is well-advised that they benefit from it when it is a possibility. The theory behind criminal justice client rehabs is it is way more effective and efficient to invest effort and time into rehabilitation than enforcement of other consequences. Much research has been done to see how effective this approach is on recidivism rates, i.e. if the individual returns or not to criminal justice system following rehab. All indicators seem quite positive, and criminal justice clients who take part in rehab have a better potential for remaining out of the system following treatment.