We had a lot of bats in the attic of our first house which was 200 years old and had clapboard over posts on the gable ends of the attic. The bats loved to sleep between the clapboards. We lined the inside of the clapboards with bird netting stapled tightly to the inside on the gable ends and shoveled and hauled out a lot of guano wearing dust masks. The bats never got in the attic again but continued to use the clapboards (and shutters) as resting sites (win/win).

Apparently bats make piles of poo which distinguishes them from most rodent interlopers.

Last edited by RAH; 01/13/18 06:24 AM.