Swatter beats laser any time. Electric swatter beats anything. Well .. it has little effect on hornets, sadly, but it owns mosquitoes. Especially because it's easy to kill them in flight with it.
Laser has many problems. For example it is rather bright. If the mosquito sits on white wall, any laser able to kill the bloodsucker would dazzle you, and if you use protection goggles (as you actually should), you would have troubles spotting the poor bastard. If it sits on furniture, any laser able to kill it will damage the furniture. I mean yes, I too tried it .. but its just not practical.
Other insects I simply catch and release outside.
As for hornets .. sometimes they swoop into my room in the middle of night ! I just sit at the computer, killing zombies or something .. and boom, in a moment 5cm hornet is sitting on the screen.
I don't have the nerve to catch THAT alive ! And electric swatter just makes them laugh. I bought freezing insecticide in spray can after my last 'encounter' .. but haven't had the opportunity to test it yet. Not that I miss it ..
I've killed a couple of house flies with my 500mW 405, they really don't like the heat at all and will try their best to get away. I wore my safety glasses while doing it, because the spot was too bright and made it harder to see the target. Next time I will probably just swat the bug and be done with it.
200 mw burns the ticks off one of my dogs without hurting the dog (white dog) black dogs just singe the fur. but for white fur/black evil tick: win! much nicer than using a ciggarette (and i no longer smoke) and you do have to burn them to get tthe head out from the skin. cat says NO to lasers and fucks off in a hurry.
I've always dreamt of a system combining a laser, camera and computer which would detect mosquitoes and shoot them down if if by doing so I'd didn't endanger anything else.
And with the rapid advances in technology it may eventually be possible. You could even use more than 1 laser for increased safety (like 5mW hitting you in the eye for a microsecond isn't that bad but hundreds of those beams hitting the mosquito at the exact same time).