The various substance abuse rehab programs which are available to alcohol and drug addicted individuals in Pomona can vary in several different ways. Quite a few drug and alcohol abuse treatment programs are offered in a residential or inpatient location, where individuals reside the entire time they are in treatment which provides a more therapeutic rehabilitation setting. Others provide substance abuse rehabilitation services on an outpatient basis which provides a sense of versatility, though outpatient programs are not always an appropriate substance abuse treatment service for people in Pomona who are having difficulties with serious drug or alcohol addiction problems. Whether or not inpatient or outpatient substance abuse rehab services are chosen, there are varying amounts of time that individuals will be expected to stay in the drug treatment facility. For example, some short-term programs offer services for 4 weeks or less, whereas long-term centers will call for at least a 3 month stay.