Years ago, I read a science article about (IIRC) Microsoft working on a device that killed mosquitoes by using lasers. The device used a ranging sensor and two lasers mounted on perpendicular walls of a room. The sensor would detect a mosquito, and would direct the two lasers so they intersected at the insect, which would then be incinerated. It could track and hit an insect within a second or two, and so could clear a room of insects in fairly short order (and keep it clear) even if a window was open.
After that one article, I never heard another thing about it. Given the lefty proclivity for exploiting rather than resolving crises, I have to wonder about the absence of further development of this device, particularly with Zika now apparently spreading into the US via mosquito vector, and malaria, dengue and other insect-borne ailments seeing spikes in recent times.
To answer my own question (after some googling), it looks like the license holder has decided to ignore the “area denial” application, and focus on building laser “fences” that supposedly create a barrier between a mosquito source like a pond or swamp, and a village or other population center.