The Bird Barrier Bat Cone 2 Bat Deterrent (n8-bc05) is a square-shaped obstruction that keeps away bats from residential or commercial buildings. This is built with a solid flange that includes mounting holes for fast and easy installation. To make it efficient for any surface installation, this can be used with a flexible vinyl flange. The bat cone perfectly fits to the entry port of a bat colony. This will surely discourage them from going back to the site.