We decided to check out a different camp site over the weekend and got swarmed with wasps when the sun was at its warmest.
Luckily the next day and during packup it was over cast and cool so they couldn't fly, but we spent like an hour shaking wasps out from all the poles of the canopy. We easily stomped to death over a hundred wasps that fell out, I've never seen anything like it
It was in Modesto reservoir, thinking back it seemed the other camp areas there didnt have that issue, we drove to the other side for the showers and didnt notice any wasps, but then again it was still a bit cold and overcast so they could have still been dormant. Good thing for them too that was the last weekend most of the campground was open for use until next season.
Theres a lot of farms and orchards around the camp we stayed at