We were lucky enough to have a nest of bald faced hornets select the outside wall of our apple house as their site. We were also lucky enough to have zero stings. It survived all season, even after heavy rains damaged the hive with runoff, the wasps repairing the best they could. The hive was attached to a gutter and wood support. The insects were happy to have the plastic serve as wall on the viewing side, and seemed unfazed by human presence.