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By Alessandro Tarozzi, Aprajit Mahajan, Joanne Yoong, and Brian Blackburn* studies have shown that insecticide-treated bednets (ITNs) are one of the most effective means of reducing malaria-related morbidity and mortality (C. Lengeler 2004). However, ITN adoption in most malarious areas remains very low, and public health interventions frequently have insufficient resources to provide complete ITN coverage for all individuals at risk. Although treatment of nets with insecticide is relatively safe, efficacious, and inexpensive, regular retreatment is rare, even among bednet users. 1 Cost is often cited as the most obvious explanation for low usage and retreatment rates, but other likely factors are lack of proper information about potential benefits and inability to set aside the relatively small amounts of money that are necessary for the purchase and maintenance of nets. The difficulty of inducing sustained compliance …