The various substance abuse rehab services which are available to alcohol and drug addicted individuals in Lee, Massachusetts can vary in several different ways. Some drug and alcohol abuse rehabilitation programs take place in a residential or inpatient setting, where clientele remain for the duration of their rehabilitation which provides a more therapeutic treatment environment. Others provide substance abuse rehab services on an outpatient basis which allows for more flexibility, though outpatient facilities are not always an appropriate substance abuse treatment program for men and women in Lee, Massachusetts who are having difficulties with long term drug addiction issues. Regardless of whether inpatient or outpatient drug and alcohol abuse rehabilitation programs are selected, there are varying lengths of time that people will be required to continue to be in the drug and alcohol rehab facility. For example, many short-term programs provide services for 4 weeks or less, while long-term centers will require at least a 90 day stay.