And the best thing about this low-tech approach is that it doesn't attempt to eliminate the mosquitoes, but to break the cycle of infection. There is a community effect if enough people are using the bed nets:

"Also in 2003, the last of the five big clinical trials of ITNs in Africa provided the firmest evidence yet of the so-called community effect, akin to the herd effect provided by vaccines. People in nearby control villages who weren't sleeping under nets experienced a substantial drop in malaria mortality as well. That's because ITNs, which in the trial were targeted to the entire household and not just vulnerable groups, were reducing the vector population and thus the chances a person would encounter an infected mosquito."

From a news article, (Science 26 October 2007:Vol. 318. no. 5850, pp. 556 - 559)

Really great to be hearing positive news on this topic, but there are still many bed nets to deliver.