 So they are very beneficial. They don't sting. They probably could sting if you grabbed one, kind of like a cicada killer. That's the great big wasp that you see flying around out in the garden about two feet off the ground, about knee high, being very intimidating. Well, the males don't even sting. They can't sting. The females won't sting unless you grab one. So once again, don't do that. They're just trying to get you away from the hole in the ground that goes down to their head.