Bear spray is dangerous and harsh and can blind humans. Good for her.
Wasp and hornet spray could very well do permanent damage.
I wouldn't recommend wasp or hornet spray except to save ones life.
What works better is wasp spray...nasty stuff and has better range than bear spray. People in the Yukon Territory often carry wasp spray instead of bear.
Bear spray is milder than the pepper spray made to defend against people.
Little correction of my last comment here. Some (not all) pepper sprays for defense against people may be as weak as bear spray, but the stronger ones aren’t. [EPA says that more than 2 percent O.C. is inhumane, or something like that.] Bears are more sensitive to the stuff than humans.
For bear defense (if needed) while doing chores, though, I’d rather rely on a Ruger Blackhawk hot-rodded with special, hardened, heavy and somewhat fast, flat-nosed .45 Colt loads (or .44 magnum for those who like the extra bit of recoil while lacking single action training). ...but no bear problems around here. In their season, they frequently walk right on by this place for water and mind their own business.
Bear spray is dangerous and harsh and can blind humans. Good for her.
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Wasp spray has better range and might well render the target blind,,,,,,make a begger out of a burgler maybe.