Every once in a while we get a call from someone thinking they have termites. The picture is a mud dauber wasp, the female constructs this nest out of dirt. Shen then paralyzes a few spiders and deposits an egg within – providing lunch for her offspring. Mud daubers don’t generally sting or defend their nest but that isn’t a reason to harass them because they can sting if provoked.
Just wait for the baby wasp to hatch out or use a shovel to dislodge the mud nest.