Criminal justice client rehabs are available being a significantly better option than jail time or heavy fines for those who have already been convicted of any type of alcohol or drug related crime. As an example, anyone who has been in prison for driving under the influence of drugs or alcohol may qualify to obtain treatment services for his or her problem instead of serving time in prison. The judge could even order that the individual receive rehabilitation, either alone or together with other consequences. New offenders in particular will often be given the ability to go with a criminal justice client rehab as an alternative to other sentencing, and it is highly recommended that they take advantage of it if it is a possibility. The theory behind criminal justice client rehabs is it is far more effective and efficient to invest commitment into rehabilitation than punishment. Much research has been carried out 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. The signs and indicators appear to be quite positive, and criminal justice clients that do take part in treatment have better possibility of remaining out of the system following rehabilitation.