The various alcohol and drug abuse treatment programs which are accessible to drug and alcohol addicted persons in Whittier, California can vary in several different ways. Quite a few substance abuse rehabilitation services are offered in a residential or inpatient setting, where clientele reside for the duration of their treatment which provides a more conducive rehabilitation environment. Others provide substance abuse treatment programs on an outpatient basis which allows for more flexibility, though outpatient facilities are not always an appropriate drug and alcohol abuse treatment program for men and women in Whittier who are having difficulties with long term drug or alcohol addiction difficulties. Whether or not inpatient or outpatient alcohol and drug abuse rehab programs are chosen, there are also different lengths of time that individuals will be expected to stay in the alcohol and drug rehabilitation facility. For instance, some short-term programs provide services for 4 weeks or less, whereas long-term facilities will require at least a 90 day stay.