Criminal justice client rehabs are available as being a significantly better option than jail time or significant fines for many who have already been convicted of any sort of drug or alcohol related crime. For example, someone who has been found guilty of driving under the influence of drugs or alcohol may be eligible to receive rehab services because of their problem instead of serving time in prison. The judge may even order that the individual receive rehab, either alone or together with other consequences. First time offenders specifically tend to be given the opportunity choose a criminal justice client rehab instead of other sentencing, and it is well-advised they take advantage of it if it is an option. 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 see how effective this strategy 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 to be quite positive, and criminal justice clients who do take part in rehab have a much better chance of remaining out of the system following rehabilitation.