Cinnamon oil is an environmentally friendly way to kill mosquito hatchlings, a Taiwanese study shows. It might even make bug repelling better smelling -- although whether cinnamon oil keeps adult mosquitoes from biting has yet to be tested. The findings, from Sen-Sung Cheng, a natural products chemist at National Taiwan University, and colleagues, appear in the July 14 issue of the Journal of Agricultural and Food Chemistry. Current mosquito-control efforts often rely on organophosphate insecticides. Use of these agents has raised health and environmental concerns, Cheng and colleagues note, so they looked for a different approach. They noted that cinnamon...