The diverse substance abuse rehab services which are offered to drug addicted persons in Mount Vernon, IN. can vary in several different ways. Quite a few substance abuse rehabilitation services take place in a residential or inpatient setting, where individuals reside for the duration of their rehab which offers a more conducive treatment environment. Others offer alcohol and drug abuse rehabilitation programs on an outpatient basis which allows for more versatility, although outpatient centers may not be a suitable alcohol and drug abuse rehabilitation service for people in Mount Vernon, IN. who are having difficulties with long term addiction problems. Whether inpatient or outpatient drug and alcohol abuse treatment programs are selected, there are varying amounts of time that people will be asked to stay in the drug and alcohol treatment program. For example, quite a few short-term programs offer programs for 4 weeks or less, while long-term programs will call for at least a 3 month stay.