The different alcohol and drug abuse rehabilitation services which are available to drug addicted people in Hamilton can differ in many different ways. Quite a few substance abuse treatment services are conducted in a residential or inpatient setting, where clients reside for the duration of their rehabilitation which provides a more conducive rehabilitation environment. Others provide drug and alcohol abuse rehabilitation programs on an outpatient basis which allows for more versatility, though outpatient programs are not always a suitable substance abuse rehab program for men and women in Hamilton who are struggling with serious addiction issues. Whether or not inpatient or outpatient substance abuse rehab programs are chosen, there are varying amounts of time that men and women will be asked to stay in the drug and alcohol treatment center. For example, some short-term programs provide programs for 4 weeks or less, while long-term programs will call for at least a 3 month stay.