Wasp spray can have effects similar to pepper spray when used for self-defense, and some have advocated its use for this purpose:
Val Glinka teaches self-defense to students at Sylvania Southview High School. For decades, he's suggested putting a can of wasp and hornet spray near your door.
Glinka says, "This is better than anything I can teach them."
Glinka considers it inexpensive, easy to find, and more effective than mace or pepper spray. The cans typically shoot 20 to 30 feet; so if someone tries to break into your home, Glinka says "spray the culprit in the eyes". It's a tip he's given to students for decades. It's also one he wants everyone to hear.
Read more at
snopes.com: Wasp Spray