Criminal justice client rehabs are available as being a far better option than jail time or significant fines for many who have already been convicted of any type of drug or alcohol related crime. For example, someone who has been in prison for driving under the influence of drugs or alcohol may be eligible to obtain treatment services for their problem instead of serving time in prison. The judge may even order the individual receive rehabilitation, either alone or in addition to other sentencing. First time offenders in particular are often given the ability to pick a criminal justice client rehab as opposed to other sentencing, and it is highly recommended that they benefit from it if it is an alternative. The theory behind criminal justice client rehabs is it is way more effective and efficient to invest time and energy into treatment than enforcement of other consequences. Much research has been completed to observe how effective this method is on recidivism rates, i.e. if the individual returns or not to criminal justice system following rehab. All indicators appear to be quite positive, and criminal justice clients who do experience treatment have a much better probability of remaining out of the system following rehab.