Until it was destroyed in a fire in September 2020, Moria camp on the island of Lesvos, Greece, was widely referred to as ‘a living hell’. This article investigates the causes and effects of poor camp conditions from the perspectives of humanitarian actors who have worked in the camp. We argue that poor conditions are intended to perform a deterrent function for both migrants and humanitarian actors. We also argue, however, that such camps are not simply static manifestations of violent borderwork, but complex, dynamic sites of struggle in which those who live and work there continuously make and remake the camp. This can be seen, for instance, in the ways in which humanitarian actors simultaneously fill the gap resulting from the violent inaction of the state while contributing to poor camp conditions, as a result of inter-agency competition and criticism, and the broader ways in which they challenge and reinforce the violent governance of migration.