Formal services such as respite care can assist carers to continue to support care recipients at home. However, many carers do not take up these services. To date, studies examining the issue of service non-use have had to extrapolate from data about service users. As well, they have been based on small samples. This project investigated the characteristics of informal carers who do not use formal services, as well as the reasons they give for non-use. It was especially concerned with those carers who have an evident need for such services. Using data from the ABS Survey of Disability, Ageing and Carers, measures of association and regression analysis were conducted to identify variables that significantly predict service non-use.