The various alcohol and drug abuse treatment programs which are offered to drug addicted individuals in Salem can vary in a lot of various ways. Some substance abuse rehab services are offered in a residential or inpatient location, where clients reside for the duration of their rehab which offers a more conducive rehab environment. Others offer substance abuse rehab programs on an outpatient basis which allows for more versatility, though outpatient centers are not always an appropriate substance abuse rehabilitation service for people in Salem who are having difficulties with serious addiction issues. Whether inpatient or outpatient alcohol and drug abuse rehabilitation services are chosen, there are also different lengths of time that individuals will be required to continue to be in the drug rehab facility. For example, some short-term programs offer programs for 4 weeks or less, while long-term facilities will require at least a 12 week stay.