Dengue, an arthropod-borne viral disease of humans found in many tropical and subtropical countries, causes an estimated 50-100 million cases of dengue fever per year, with a fatality rate of 2.5-5 million people per year. Aedes aegypti, the primary vector of dengue virus, feeds almost exclusively on humans, even when other animals are available. In Thailand, most Ae. aegypti are found inside houses, such as under beds and inside closets where they rest between blood meals. A unique, low cost mosquito trap has been developed by ICA TriNova (Forest Park, GA). The trap, ca. 8 in. tall x 5 in. diameter, utilizes 2 dry chemicals to produce carbon dioxide. Mosquitoes are attracted to the carbon dioxide source in the trap and are sucked onto an adjacent sticky paper by a small fan in the trap. Indoor mosquito cage studies have shown that more than 90 percent of the Ae. aegypti released in the cage have been caught by the Sticky Fan Trap 1 hr after release.