This study examined the six-month and one-year treatment statuses of 118 patients admitted to an abstinence-oriented, outpatient facility serving dually disordered adults. Findings revealed that persons who have been underserved by the mental health and substance abuse fields can be engaged in treatment and will respond favorably to it. Overall, demographic characteristics, admission diagnoses, and past treatment history did not predict treatment outcomes. Rather, patients who participated more fully in treatment had better recoveries than did those who did not engage in treatment. In addition, patients who complied and responded to treatment during their first six months in treatment were more likely to comply and respond to treatment during the second six months of treatment. These results should encourage other clinicians to develop innovative services that meet the needs of dually disordered adults.