Criminal justice client rehabs are available as a considerably better option than jail time or heavy fines for individuals who have already been convicted of any sort of alcohol or drug related crime. By way of example, a person who has been in prison for driving under the influence of alcohol or drugs may be eligible to receive rehab services for his or her problem instead of serving time in jail. The judge could even order the individual receive treatment, either alone or together with other sentencing. First time offenders specifically are often given the chance to select a criminal justice client rehab rather than other sentencing, and it is highly recommended they take advantage of it if it is an option. The concept behind criminal justice client rehabs is it is way more effective and efficient to invest time and effort into rehabilitation than punishment. Much research has been carried out to observe how effective this process is on recidivism rates, i.e. if the criminal justice client returns or not to criminal justice system following treatment. The signs and indicators seem quite positive, and criminal justice clients who take part in treatment have a much better probability of remaining out of the judicial system after treatment.