Drawing on feminist theories of parenting and the welfare state, I analyze experiences of diaper need as a case of how gender, class, and race inequalities shape the social organization of caregiving and limited policy responses. Data from in-depth interviews with 70 mothers who experienced diaper need and 40 diaper bank staff revealed obstacles low-income mothers face in managing lack of access to children’s basic needs and how gendered assumptions of parental responsibility thwart public diaper support efforts. I use this (...) case to theorize gender policy vacuums: These occur when gender disparities and ideologies prevent systematic responses to structural problems. Empirically this study contributes to understandings of diaper need as a problem of the gender structure that cannot be solved with alternative diapering methods that assume middle-class, white, androcentric privileges. Theoretically it illuminates key mechanisms by which feminized care labor is devalued and rendered invisible and how this erasure rationalizes lack of redress for gendered inequalities and creates policy gaps around caregiving. (shrink)