A second place to look
Tell us whether you can watch the activity from indoors. Stay out of the flight path and avoid disturbing the opening while insects are using it.
Turlock, CA
Wasps and stinging insects in Turlock, CA
Wasps repeatedly crossing a patio may be using a gap in the fence, a light fixture or an eave. Stay clear, especially if the patio is the route to the yard or garage.