The various substance abuse rehab programs which are offered to drug addicted people in Denver can vary in many various ways. Quite a few alcohol and drug abuse rehabilitation services take place in a residential or inpatient location, where clients remain for the duration of their rehab which offers a more conducive treatment environment. Others provide alcohol and drug abuse rehabilitation programs on an outpatient basis which allows for more flexibility, although outpatient centers are not always a suitable alcohol and drug abuse rehab program for men and women in Denver who are struggling with long term drug or alcohol addiction issues. Whether or not inpatient or outpatient substance abuse rehabilitation services are selected, there are also different amounts of time that individuals will be required to stay in the drug and alcohol rehab program. For example, many short-term programs provide services for 4 weeks or less, while long-term facilities will call for at least a 90 day stay.