Criminal justice client rehabs are available as a considerably better option than incarceration or significant fines for individuals who have already been convicted of any type of drug or alcohol related crime. By way of example, somebody who has been in prison for driving while impaired of drugs or alcohol may qualify to receive rehab services for problem rather than serving time in jail. The judge might order that the individual receive rehabilitation, either alone or together with other sentencing. Very first time offenders in particular in many cases are given the chance to go with a criminal justice client rehab rather than other sentencing, and it is highly recommended that they benefit from it when it is a possibility. The theory behind criminal justice client rehabs is that it is way more effective and efficient to invest time and effort into treatment than enforcement of other consequences. Much research has been completed to discover how effective this approach is on recidivism rates, i.e. if the criminal justice client returns or not to criminal justice system following rehab. The signs and indicators seem to be quite positive, and criminal justice clients who experience treatment have better chance of remaining out of the system after rehab.