Criminal justice client rehabs are available as being a significantly better option than time in jail or significant fines for those who have already been convicted of any sort of drug or alcohol related crime. For example, anyone who has been found guilty of driving under the influence of alcohol or drugs may qualify for treatment services because of their problem as opposed to serving time in jail. The judge might order that the individual receive treatment, either alone or together with other sentencing. First time offenders in particular will often be given the opportunity to choose a criminal justice client rehab as an alternative to other sentencing, and it is highly recommended they reap the benefits of it when it is a choice. The theory behind criminal justice client rehabs is it is far more effective and efficient to invest time and effort into treatment than enforcement of other consequences. Much research has been completed to find out how effective this approach is on recidivism rates, i.e. if the criminal justice client returns or not to criminal justice system following treatment. All indicators seem quite positive, and criminal justice clients that take part in rehab have a better probability of remaining out of the system after rehabilitation.