Thank you for sharing your experiences with us. It helps me remember how fantastically tiny my problems are.

Well done. My loft always seems to be very attractive, I have had mice several times, rats three, two bad wasp years in the last twenty or so, with several nests each time, and a swarm of bees, which died and left a heap of their dead behind.

In one way however I have been lucky because I have never had bats. In the UK you just have to hope, that you do not get bats, because you are not allowed by law to evict them, or even block their entrance.

I wonder if the comfort of the ac is the attraction?

It's always nice to get a cheap fix on an expensive appliance, and an honest HVAC person is a real gem. I hope the mouse situation is permanently gone as well.

Yay! I can sleep tonight!

(glad you got it fixed)