Imperfect Competition and Sanitation: Evidence from Randomized Auctions in Senegal Jean-Francois Houde, Molly Lipscomb, Terence Johnson and Laura Schechter Abstract We document the impact of imperfect competition in the sanitation market in Dakar Senegal, both in the traditional market and in an experimental, just-in-time auction system that we designed in collaboration with the government. […]