First roto molded bat house shell proven to work in the field and attract bats! This prototype was installed in March 2012 just days before a small maternity colony returned to its roost in the eves of our house. Less than a month later they decided to move into their house. Note that this was not an exclusion as the entrance to their old roost was not blocked off.



Other than a brief absence, bats stayed all summer and peaked at 49. Still had a dozen active bats until the end of October and five hanging out in a state of torpor as late as Thanksgiving.