The various alcohol and drug abuse rehabilitation services which are offered to alcohol and drug addicted persons in St. Helena, California can differ in many different ways. Quite a few drug and alcohol abuse rehabilitation programs are conducted in a residential or inpatient setting, where clients reside for the duration of their treatment which supplies a more conducive rehab setting. Others offer substance abuse rehab services on an outpatient basis which allows for more flexibility, although outpatient facilities are not always a suitable drug and alcohol abuse rehabilitation service for people in St. Helena who are struggling with serious addiction problems. Whether or not inpatient or outpatient alcohol and drug abuse rehabilitation programs are selected, there are varying amounts of time that individuals will be required to continue to be in the alcohol and drug rehabilitation center. For example, many short-term programs offer programs for 4 weeks or less, while long-term facilities will demand at least a 3 month stay.