Criminal justice client rehabs are available being a considerably better option than prison time or heavy fines for those who have already been convicted of any type of alcohol or drug related crime. For instance, somebody who has been in prison for driving under the influence of alcohol or drugs may qualify to receive treatment services for his or her problem instead of serving time in prison. The judge could even order the individual receive treatment, either alone or in addition to other sentencing. First-time offenders in particular are often given the ability to select a criminal justice client rehab as an alternative to other sentencing, and it is highly recommended they reap the benefits of it if it is an option. The theory behind criminal justice client rehabs is it is much more effective and efficient to invest time and energy into rehab than enforcement of other consequences. Much research has been done to find out how effective this process is on recidivism rates, i.e. if the individual returns or not to criminal justice system following rehabilitation. All indicators seem quite positive, and criminal justice clients who experience rehab have better chance of remaining out of the judicial system following rehabilitation.