Criminal justice client rehabs are available as being a considerably better option than jail time or significant fines for those who have already been convicted of any kind of drug or alcohol related crime. As an example, anyone who has been found guilty of driving under the influence of alcohol or drugs may be eligible to receive treatment services for their problem rather than serving time in prison. The judge might order that the individual receive treatment, either alone or in addition to other consequences. First time offenders specifically in many cases are given the opportunity to select a criminal justice client rehab as opposed to other sentencing, and it is highly recommended they benefit from it if it's a choice. The theory behind criminal justice client rehabs is it is much more efficient and effective to invest time and energy into rehabilitation than enforcement of other consequences. Much research has been carried out to find out how effective this process is on recidivism rates, i.e. if the criminal justice client returns or not to criminal justice system following rehab. All indicators appear to be quite positive, and criminal justice clients that take part in rehab have better chance of remaining out of the system following rehabilitation.