<https://www.franklinpestsolutions.com/pest/mud-dauber/#webpage>
<http://schema.org/description>
"Mud dauber wasps are solitary wasps that build tube-like nests in columns on buildings. If it has a hole in it, the wasp has emerged and the nest is old."
<https://www.franklinpestsolutions.com/pest/mud-dauber/>