The diverse drug and alcohol abuse treatment programs which are accessible to drug addicted persons in Old Chatham can differ in many different ways. Some drug and alcohol abuse rehab services are conducted in a residential or inpatient facility, where clients remain the entire time they are in treatment which supplies a more conducive treatment environment. Others offer substance abuse rehab services on an outpatient basis which provides a sense of versatility, although outpatient facilities are not always a suitable substance abuse rehab program for people in Old Chatham who are having difficulties with long term addiction issues. Whether inpatient or outpatient substance abuse rehabilitation programs are selected, there are varying lengths of time that individuals will be expected to remain in the drug and alcohol rehab center. For example, quite a few short-term programs offer programs for 30 days or less, while long-term programs will call for at least a 12 week stay.