Criminal justice client rehabs can be considered being a far better option than jail time or significant fines for those who have already been convicted of any sort of alcohol or drug related crime. For example, someone who has been found guilty of driving while impaired of drugs or alcohol may qualify to obtain rehabilitation services for their problem as opposed to serving time in prison. The judge might order that the individual receive treatment, either alone or along with other sentencing. First time offenders specifically tend to be given the opportunity to choose a criminal justice client rehab rather than other sentencing, and it is well-advised they make the most of it if it is an alternative. The theory behind criminal justice client rehabs is it is far more effective and efficient to invest effort and time into rehab than enforcement of other consequences. Much research has been done to find out how effective this method is on recidivism rates, i.e. if the criminal justice client returns or not to criminal justice system following rehab. All indicators seem quite positive, and criminal justice clients that take part in rehab have a better probability of remaining out of the judicial system following rehabilitation.