[sdfx]

And in case you want a local, mechanical option - don't those electric fly killers with the blue light work for mosquitoes as well?

[ars]

Blue light does not attract mosquitoes.

Mosquitoes are actually attracted to infrared light - the exact opposite of blue light. And CO2.

[spacebob]

I think the problem is they attract various types of insects indiscriminately, which can be disastrous for the ecosystem. IIRC, the laser's tracking mechanism only detects the mosquitoes' wing frequency range.