Three repellent products, OFF! Mosquito Lamp, Insecticandel, and Rescue DecoShield, were comparatively evaluated against Aedes aegypti in 130-m2 enclosed areas with a 317-m3 air volume. The results showed that the OFF! Mosquito Lamp with metofluthrin had a greater effect than the Insecticandel with transfluthrin, which had greater effect than the DecoShield with lemongrass oil and several other plant oils against Ae. aegypti. The OFF! Mosquito Lamp was the only product to exceed 50% mortality. An outdoor semi–field evaluation was conducted to determine the effect by distance of the product. Mosquitoes were stationed in cages at 3, 6, 9, 12, and 15 m away from the treatment in a downwind linear array and exposed for 10 min. They were recorded for knockdown after treatment and at 24 h for mortality. The OFF! Mosquito Lamp produced 100% mortality indoors and >80% knockdown and 90% mortality within 6 m while outdoors against Ae. aegypti.
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