The different substance abuse treatment services which are accessible to drug and alcohol addicted persons in Hanover can differ in many different ways. Quite a few alcohol and drug abuse rehabilitation programs are offered in a residential or inpatient setting, where individuals reside for the duration of their rehab which offers a more conducive treatment setting. Others provide drug and alcohol abuse rehab programs on an outpatient basis which allows for more flexibility, although outpatient facilities are not always an appropriate substance abuse treatment program for men and women in Hanover who are having difficulties with serious drug addiction problems. Whether inpatient or outpatient substance abuse rehabilitation services are selected, there are varying lengths of time that individuals will be expected to stay in the alcohol and drug rehab facility. For example, many short-term programs provide services for 4 weeks or less, whereas long-term facilities will require at least a 3 month stay.