In this paper, the authors present findings from a study that tested a door-to-door marketing intervention aimed to increase use of a tar- geted health product, in our setting chlorine tablets for drinking water purification. Specifically, they examine three treatments in which this good is: (1) sold alone, (2) sold alongside a familiar and cheaper side good that is priced at its retail value; and (3) sold alongside the same side good that is priced on a promotional offer.