This paper discusses the results of a study that investigated the effectiveness of a demonstration program designed to provide in-home intervention with parents and children in families with substance abuse issues. The goals of the program were to prevent further child abuse or neglect, prevent family breakdown and child placement, and facilitate substance abuse treatment for caregivers. Data were collected on 138 participating families referred to the program by the local public child welfare agency or from a hospital-sponsored drug treatment center that treated many parents living in the program's catchment area. Findings from the study underscored the challenges of assisting parents who are at high risk for child maltreatment to accept and sustain addictions treatment. While the program was successful in encouraging a large number of parents/caregivers to enter substance abuse treatment programs, the treatment dropout rate was high, particularly among those who did not avail themselves of additional support from the day care program. On the other hand, 67 percent of participants either completed treatment, or dropped out and returned to treatment while participating in the demonstration program. (Contains 12 references.) (CR)