Criminal justice clients in Ontario, California often end up in drug and alcohol rehabilitation programs because they were convicted of crimes relating to drugs, whether they were selling drugs or had drugs in their possession or were high on drugs. Some courts put these types of individuals into the drug and alcohol rehab system mainly due to the fact that they consider that rehabbing them will be more effective for society and for the individual, rather than placing them in jail with no treatment at all. This has been established to be very successful not only in helping and rehabilitating this type of client in Ontario, but also in keeping them abstinent and in many cases away from the criminal justice system permanently.