Criminal justice client rehabs are available being a significantly better option than jail time or significant fines for those who have already been convicted of any kind of drug or alcohol related crime. For example, someone who has been in prison for driving under the influence of drugs or alcohol may be eligible for treatment services for his or her problem as opposed to serving time in jail. The judge might order the individual receive treatment, either alone or in addition to other sentencing. New offenders specifically will often be given the chance to go with a criminal justice client rehab as an alternative to other sentencing, and it is highly recommended that they take advantage of it when it is an option. The concept behind criminal justice client rehabs is that it is far more effective and efficient to invest time and effort into rehab than enforcement of other consequences. Much research has been carried out to discover how effective this method is on recidivism rates, i.e. if the individual returns or not to criminal justice system following rehabilitation. The signs and 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 following rehab.