Criminal justice client rehabs are available as being a far better option than prison time or heavy fines for many who have already been convicted of any sort of drug or alcohol related crime. For instance, someone who has been in prison for driving under the influence of drugs or alcohol may be eligible to receive rehab services because of their problem instead of serving time in jail. The judge may even order that the individual receive rehab, either alone or together with other consequences. First-time offenders specifically will often be given the chance to choose a criminal justice client rehab as opposed to other sentencing, and it is highly recommended they benefit from it if it is an option. The theory behind criminal justice client rehabs is that it is far more efficient and effective to invest time and energy into rehab 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 rehabilitation. All indicators seem to be quite positive, and criminal justice clients who experience treatment have a much better chance of remaining out of the judicial system after treatment.