Check out this very complete legal and expert analysis of using wasp spray from a self-defense expert.
http://oklahomapersonaldefense.com/waspspraymyth.html
People who try using wasp spray for self-defense can be victims. . . Or defendants later.
I would think you’d have to be a pretty darn good aim with wasp spray, too, to hit the face/eyes...much better than you’d have to be with shotgun. Doesn’t the wasp spray come out in a stream?
Gimme that shotgun.