No really. People who had previously worked on the USA's SDI defense system have subsequently put together a relatively cheap anti mosquito laser system. Yes, it tracks them and shoots them down with lasers.
The article actually has a huge amount of detail for how to put this thing together, from sensors to camera aiming to laser aiming and exactly what level of laser is needed to kill a mosquito. One of the best parts is is the videos on page 4 showing mozzies being melted by lasers. Barrels of fun :)