Background: The relationship between ethnicity, service use and perceptions of service effectiveness is inconclusive. This study examined differences in service use and perceptions of service effectiveness between Israeli Jewish (Jewish) and Israeli Arab (Arab) parental caregivers of individuals with intellectual disabilities and dual diagnosis of psychopathology. Methods: Parental caregivers (n = 186) of individuals with intellectual disabilities or dual diagnosis, aged 10 to 30 years, completed a self-report questionnaire.