The different alcohol and drug abuse rehab services which are available to drug and alcohol addicted individuals in Mertztown, PA. can differ in many various ways. Quite a few drug and alcohol abuse rehab services are offered in a residential or inpatient facility, where clients remain the entire time they are in rehabilitation which offers a more conducive treatment environment. Others provide alcohol and drug abuse rehabilitation services on an outpatient basis which allows for more flexibility, although outpatient programs may not be an appropriate substance abuse treatment service for people in Mertztown, PA. who are struggling with serious drug addiction difficulties. Whether inpatient or outpatient drug and alcohol abuse rehabilitation programs are selected, there are also different lengths of time that individuals will be expected to remain in the alcohol and drug rehabilitation program. For instance, some short-term programs offer programs for 30 days or less, while long-term programs will call for at least a 12 week stay.