The different substance abuse rehab programs which are available to drug addicted individuals in Lock Haven, PA. can vary in a lot of various ways. Some substance abuse treatment services take place 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 flexibility, although outpatient programs may not be a suitable drug and alcohol abuse treatment service for individuals in Lock Haven, PA. who are struggling with serious drug or alcohol addiction problems. Whether or not inpatient or outpatient substance abuse treatment services are selected, there are varying amounts of time that people will be expected to continue to be in the drug and alcohol treatment program. For example, some short-term programs offer programs for 4 weeks or less, whereas long-term centers will demand at least a 90 day stay.