Criminal justice client rehabs are available being a far better option than incarceration or heavy fines for individuals who have been convicted of any sort of drug or alcohol related crime. By way of example, someone who has been in prison for driving under the influence of drugs or alcohol may be eligible to get rehab services for their problem as opposed to serving time in prison. The judge could even order the individual receive rehabilitation, either alone or as well as other consequences. First time offenders in particular tend to be given the opportunity to choose a criminal justice client rehab instead of other sentencing, and it is highly recommended 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 effort and time into rehab than enforcement of other consequences. Much research has been carried out to find out how effective this approach 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 experience rehabilitation have better chance of remaining out of the judicial system after rehabilitation.