The different alcohol and drug abuse treatment programs which are offered to alcohol and drug addicted persons in Austin can differ in several different ways. Quite a few substance abuse rehab services are offered in a residential or inpatient setting, where clients remain for the duration of their rehab which supplies a more conducive treatment environment. Others provide drug and alcohol abuse rehab services on an outpatient basis which provides a sense of versatility, although outpatient facilities are not always an appropriate alcohol and drug abuse rehabilitation service for people in Austin who are having difficulties with serious addiction problems. Whether or not inpatient or outpatient drug and alcohol abuse rehab programs are chosen, there are also different amounts of time that individuals will be required to stay in the alcohol and drug rehab program. For example, some short-term programs offer programs for 4 weeks or less, while long-term centers will require at least a 90 day stay.