Criminal justice client rehabs are available as being a significantly better option than prison time or heavy fines for those who have been convicted of any kind of drug or alcohol related crime. As an example, a person who has been in prison for driving under the influence of alcohol or drugs may be eligible for rehab services for their problem rather than serving time in jail. The judge could even order the individual receive rehab, either alone or along with other sentencing. New offenders in particular tend to be given the opportunity to choose a criminal justice client rehab instead of other sentencing, and it is highly recommended they take advantage of 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 rehabilitation than enforcement of other consequences. Much research has been completed to observe 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 quite positive, and criminal justice clients that do take part in rehabilitation have better chance of remaining out of the system following rehabilitation.