Purpose: The Multiple Family Group (MFG) service delivery model to reduce childhood disruptive behavior disorders has shown promise in engaging child welfare-involved families. This qualitative study examines caregivers' perceptions of factors that influence retention in MFGs among child welfare-involved families. Methods: Twenty-five predominantly Black and Hispanic adult (aged 26-57) female caregivers with child welfare services involvement participated in individual, in-depth interviews. Transcribed interview data were thematically coded, guided by grounded theory methodology. Emergent themes were subsequently organized into a conceptual framework. Results: Factors promoting retention included the quality of interaction among group members, group facilitators' attentive approach with caregivers, supports designed to overcome logistical barriers, and perceptions of MFG activities as fun and helpful. Caregivers' mental health and personal characteristics as well as children's behavior also impacted retention. Conclusions: Findings suggest MFGs are acceptable for child welfare-involved caregivers. Modifications are suggested to tailor to setting and client characteristics.