Criminal justice client rehabs are available as a considerably better option than incarceration or significant fines for many who have already been convicted of any type of drug or alcohol related crime. For instance, a person who has been in prison for driving under the influence of drugs or alcohol may qualify to get rehab services because of their problem rather than serving time in prison. The judge might order that the individual receive rehabilitation, either alone or as well as other sentencing. Very first time offenders in particular in many cases are given the ability to go with a criminal justice client rehab rather than other sentencing, and it is well-advised that they take advantage of it if it is a possibility. 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 discover how effective this process is on recidivism rates, i.e. if the individual returns or not to criminal justice system following rehab. The signs and indicators appear to be quite positive, and criminal justice clients that do take part in rehab have a better potential for remaining out of the judicial system following treatment.