The various substance abuse rehabilitation services which are available to drug addicted persons in Pomona can vary in many different ways. Some drug and alcohol abuse treatment services are conducted in a residential or inpatient facility, where clientele reside for the duration of their rehab which provides a more therapeutic rehab environment. Others offer drug and alcohol abuse rehab services on an outpatient basis which provides a sense of flexibility, although outpatient centers may not be a suitable alcohol and drug abuse treatment program for men and women in Pomona who are struggling with long term drug addiction issues. Whether inpatient or outpatient substance abuse treatment services are chosen, there are also different amounts of time that individuals will be asked to remain in the drug and alcohol treatment center. For example, many short-term programs provide services for a month or less, while long-term programs will call for at least a 90 day stay.