The various drug and alcohol abuse rehabilitation programs which are offered to alcohol and drug addicted people in Duncannon, Pennsylvania can vary in several different ways. Some drug and alcohol abuse rehabilitation services are conducted in a residential or inpatient location, where clientele remain for the duration of their rehab which offers a more conducive rehabilitation environment. Others provide substance abuse rehabilitation services on an outpatient basis which allows for more versatility, although outpatient centers may not be an appropriate drug and alcohol abuse rehabilitation program for men and women in Duncannon, Pennsylvania who are having difficulties with long term drug addiction issues. Whether or not inpatient or outpatient substance abuse treatment services are chosen, there are varying lengths of time that individuals will be asked to continue to be in the alcohol and drug rehab facility. For instance, some short-term programs offer programs for 30 days or less, while long-term facilities will require at least a 3 month stay.