The various substance abuse rehabilitation programs which are accessible to drug addicted persons in Napa can vary in many various ways. Quite a few drug and alcohol abuse treatment services take place in a residential or inpatient facility, where clients remain for the duration of their rehabilitation which provides a more therapeutic rehab environment. Others provide drug and alcohol abuse treatment programs on an outpatient basis which allows for more versatility, though outpatient centers may not be a suitable alcohol and drug abuse rehabilitation program for men and women in Napa, California who are struggling with long term drug or alcohol addiction difficulties. Whether inpatient or outpatient drug and alcohol abuse rehabilitation programs are chosen, there are varying lengths of time that men and women will be required to stay in the alcohol and drug rehab center. For example, quite a few short-term programs offer programs for 4 weeks or less, whereas long-term centers will call for at least a 90 day stay.