Criminal justice client rehabs are available as a considerably better option than prison time or heavy fines for those who have already been convicted of any type of drug or alcohol related crime. For example, anyone who has been in prison for dui of drugs or alcohol may be eligible for rehab services for his or her problem as an alternative to serving time in prison. The judge could even order that the individual receive rehab, either alone or together with other sentencing. First time offenders in particular are often given the opportunity choose a criminal justice client rehab as an alternative 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 that it is much more effective and efficient to invest commitment into rehab than punishment. Much research has been done to see 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 quite positive, and criminal justice clients who experience rehab have better chance of remaining out of the judicial system after treatment.