The various alcohol and drug abuse rehab programs which are available to alcohol and drug addicted persons in Long Island can vary in several different ways. Some alcohol and drug abuse rehab programs are offered in a residential or inpatient setting, where clients remain the entire time they are in treatment which supplies a more conducive rehabilitation environment. Others provide substance abuse rehabilitation services on an outpatient basis which allows for more flexibility, though outpatient facilities are not always a suitable substance abuse rehab program for men and women in Long Island who are having difficulties with serious drug addiction difficulties. Whether or not inpatient or outpatient drug and alcohol abuse treatment programs are chosen, there are varying lengths of time that individuals will be asked to stay in the alcohol and drug rehab facility. For example, quite a few short-term programs offer services for 30 days or less, while long-term centers will demand at least a 3 month stay.