据 tenant 讲有~20只 bats.
did some research, best is to cover all holes to attic up or by some screen,
but leave a one way out section so they can not come back. not easy to do
in reality.
also tried some chemicals that can drive them out, nobody knows.
What animals are bats afraid of? we can borrow the experience from the creative
idea of the other folks here:
http://bbs.wenxuecity.com/tzlc/477899.html
