The different alcohol and drug abuse rehabilitation programs which are offered to alcohol and drug addicted persons in Pomona, CA. can vary in many various ways. Quite a few alcohol and drug abuse rehab programs are offered in a residential or inpatient facility, where clientele remain the entire time they are in rehab which supplies a more conducive rehabilitation environment. Others provide substance abuse rehab services on an outpatient basis which allows for more flexibility, though outpatient programs are not always a suitable drug and alcohol abuse rehab service for individuals in Pomona, CA. who are struggling with serious addiction issues. Whether or not inpatient or outpatient drug and alcohol abuse rehab services are chosen, there are also different lengths of time that individuals will be asked to continue to be in the alcohol and drug treatment program. For instance, some short-term programs provide services for a month or less, while long-term centers will require at least a 90 day stay.