What's in that mosquito spray...?

[patric]

We finally had a decent firefly population this summer.  Something naturally relaxing about sitting on the patio and just following the flights of lightning bugs as they interact with each other.
Brings your blood pressure down.

Came to an abrupt end Monday night around 11pm when the mosquito sprayer truck came through.
Not a single firefly left, but the bats are still hunting the mosquitoes that remain (I had hung a bat house this spring to cut down on mosquitoes without having to spray).
Makes the yard seem empty now.