Criminal justice client rehabs are available being a significantly better option than incarceration or heavy fines for those who have already been convicted of any type of alcohol or drug related crime. For example, somebody who has been in prison for driving under the influence of drugs or alcohol may qualify to get rehab services for his or her problem as opposed to serving time in prison. The judge could even order that the individual receive rehabilitation, either alone or together with other consequences. Very first time offenders in particular tend to be given the opportunity to select a criminal justice client rehab as an alternative to other sentencing, and it is well-advised they reap the benefits of it if it is a choice. The theory behind criminal justice client rehabs is it is far more effective and efficient to invest effort and time into rehabilitation than enforcement of other consequences. Much research has been done to find out how effective this strategy is on recidivism rates, i.e. if the criminal justice client returns or not to criminal justice system following rehab. The signs and indicators appear to be quite positive, and criminal justice clients who do experience rehab have a better probability of remaining out of the judicial system following rehab.