Criminal justice client rehabs are available as a considerably better option than prison time or heavy fines for those who have been convicted of any type of drug or alcohol related crime. By way of example, a person who has been in prison for driving drunk of drugs or alcohol may be eligible for rehab services for their problem rather than serving time in jail. The judge might order the individual receive treatment, either alone or along with other sentencing. First-time offenders specifically in many cases are given the chance to pick a criminal justice client rehab as an alternative to other sentencing, and it is well-advised they make the most of it when it is a possibility. The theory behind criminal justice client rehabs is it is much more effective and efficient to invest time and effort into rehab than enforcement of other consequences. Much research has been done to observe how effective this method is on recidivism rates, i.e. if the individual returns or not to criminal justice system following rehab. The signs and indicators appear to be quite positive, and criminal justice clients who take part in rehab have a much better potential for remaining out of the judicial system following rehabilitation.