The different substance abuse treatment services which are accessible to drug and alcohol addicted people in Paris can differ in a lot of various ways. Some substance abuse treatment services take place in a residential or inpatient facility, where clientele reside for the duration of their rehabilitation which supplies a more therapeutic treatment environment. Others offer alcohol and drug abuse treatment services on an outpatient basis which provides a sense of flexibility, though outpatient facilities may not be an appropriate alcohol and drug abuse rehab service for individuals in Paris who are struggling with serious drug addiction problems. Regardless of whether inpatient or outpatient substance abuse rehabilitation programs are selected, there are varying lengths of time that individuals will be expected to remain in the drug treatment center. For example, quite a few short-term programs provide programs for 30 days or less, whereas long-term facilities will require at least a 90 day stay.