Common Eumenid Wasps Blocked from Entering House
Common eumenid wasps are beneficial, as they hunt oakworms, saving our oak trees from defoliation. But people still do not like them in their homes. Here is a video showing the wasps, unable to re-enter the wall voids, after we caulked the entry points. Each of these wasps is carrying an oakworm. The white caulk will dry clear. Columbia California, 23 May 2017.