cool! been thinking about some very weak laser & attached detector every time I was lying under one of mosquito nets while travelling (or cursing myself for forgetting to bring one with me). Didn't know it's actually semi-real thing :O The issue I thought about was cheap and reliable detection - to avoid firing laser in direction of a person's yes behind mosquito for example.

"Photonic Fence can kill up to 50 to 100 mosquitoes a second, at a maximum range of 100 ft" - now that's pretty awesome!