John wrote:

Have you considred building bat houses?

I've got nothing against bats, and wouldn't mind if there were bats
flying around my place at night (there might very well be - I don't know
- it's hard to see when it's dark out).

But it's a fallacy that bats eat lots of mosquitoes.

I have no doubt that in more tropical or sub-tropical areas, rural, lots
of standing water, marshes, etc, that there are clouds of mosquitoes
where the bats can just fly around with their mouths open and collect
dozens of mosquitoes in a single pass and repeat that several times a
minute for several hours.

But in the northern half of the US and southern Canada, in urban or even
suburban residential back yards, you're not going to have these dense
clouds of mosquites and large open flyways for the bats to swoop in with
their mouths open and collect them.

Individual mosquitoes are too small to be detected by the bat's
echo-location system, and a single mosquito wouldn't give the bat enough
calories to make the effort worth it.