Criminal justice client rehabs are available being a far better option than jail time or heavy fines for those who have already been convicted of any kind of drug or alcohol related crime. By way of example, someone who has been in prison for driving drunk of drugs or alcohol may qualify to obtain rehabilitation services for their problem instead of serving time in jail. The judge could even order the individual receive rehabilitation, either alone or in addition to other sentencing. New offenders specifically will often be given the chance to select a criminal justice client rehab rather than other sentencing, and it is well-advised they benefit from it when it is a choice. The theory behind criminal justice client rehabs is it is far more efficient and effective to invest time and effort into rehabilitation than enforcement of other consequences. Much research has been carried out to see how effective this strategy is on recidivism rates, i.e. if the criminal justice client returns or not to criminal justice system following treatment. The signs and indicators appear to be quite positive, and criminal justice clients who take part in rehabilitation have a better possibility of remaining out of the system after rehab.