I've got a camera in the back that's challenging, because of the trees. Foliage + bright sunlight + wind = lots of false triggers on high-contrast shadows moving around a lot. I'm now up to three detection zones on that one and I think I'm pretty close to "ok."
Earlier this evening I was getting a bunch of bug hits on little bugs flying through the most sensitive of the zones with the lowest threshold: 60 and 9, respectively. I turned the sensitivity down to 50 and that stopped. I'll do a walk test tomorrow to see if it still fires on people-sized objects.
The really big bugs that fly right in front of the camera you can't do much about. Had a moth fly right into that camera, earlier this evening, and leave moth dust on the lens, which drove the exposure compensation a little wonky.