The different substance abuse rehab programs which are accessible to drug and alcohol addicted people in Rockland can differ in many different ways. Some substance abuse rehab services take place in a residential or inpatient setting, where clients reside the entire time they are in treatment which supplies a more therapeutic rehabilitation environment. Others offer alcohol and drug abuse rehab services on an outpatient basis which allows for more flexibility, though outpatient centers are not always an appropriate alcohol and drug abuse rehabilitation program for individuals in Rockland who are having difficulties with serious addiction issues. Whether inpatient or outpatient alcohol and drug abuse rehab programs are chosen, there are varying amounts of time that individuals will be expected to continue to be in the drug and alcohol rehabilitation program. For example, many short-term programs offer services for 4 weeks or less, whereas long-term centers will require at least a 90 day stay.