The different substance abuse rehab services which are offered to alcohol and drug addicted individuals in Mount Gretna, PA. can vary in several various ways. Some substance abuse treatment programs are conducted in a residential or inpatient setting, where clientele remain for the duration of their rehab which provides a more therapeutic rehab setting. Others offer drug and alcohol abuse treatment programs on an outpatient basis which provides a sense of flexibility, although outpatient programs may not be an appropriate drug and alcohol abuse rehabilitation service for individuals in Mount Gretna, PA. who are struggling with long term drug addiction problems. Whether inpatient or outpatient drug and alcohol abuse rehabilitation programs are selected, there are also different amounts of time that men and women will be asked to continue to be in the drug rehab center. For instance, many short-term programs offer programs for 4 weeks or less, while long-term centers will require at least a 12 week stay.