willshak wrote:

The best mosquito killers are Bats.

While I've got nothing against bats, and wouldn't mind if there were
some around my place (I don't think there are any), I can't believe that
a mosquito is large enough to have an acoustic profile that would result
in it reflecting enough sound back to a bat to allow for echo location.

Or that there are enough calories in a mosquito to be worth the effort.

In other words, while I can believe that bats can detect, and eat, a lot
of flying insects (moths, etc) I simply don't believe that mosquitoes
form any significant portion of their diet.