In Sweden, preventive support groups for children exposed to domestic violence, substance abuse or mental illness are provided by local child protection services (CPS). The stigma of parental problems and contact with CPS are barriers to recruiting children. This article investigates how such barriers are experienced and handled by professional support group leaders. The empirical data is drawn from five group interviews with 16 professionals, recruited from a purposive sample of nine local authorities in Sweden. It is found that professionals experience stigma as a barrier to recruiting children, mainly the parents' shame but also their fear of CPS involvement. Professionals describe parents' problems on a ‘scale of shamefulness’, ranging from divorce to domestic violence, and the barriers vary in strength relative to the shamefulness of the problem. Parents are gatekeepers for their children's participation, so destigmatizing and shame‐reducing strategies, whether on the interpersonal, organizational or structural level, are called for to increase children's access. However, strategies targeting parental shame are not without their challenges and risks.