The various substance abuse rehab programs which are offered to alcohol and drug addicted individuals in Wales can differ in a lot of various ways. Some drug and alcohol abuse rehab programs take place in a residential or inpatient facility, where clients reside the entire time they are in rehab which offers a more therapeutic rehabilitation environment. Others provide alcohol and drug abuse rehabilitation services on an outpatient basis which provides a sense of versatility, though outpatient facilities may not be a suitable alcohol and drug abuse treatment program for men and women in Wales who are struggling with long term addiction problems. Whether inpatient or outpatient substance abuse rehabilitation services are chosen, there are varying lengths of time that individuals will be required to continue to be in the alcohol and drug rehabilitation center. For example, some short-term programs provide programs for a month or less, whereas long-term facilities will call for at least a 90 day stay.