I forgot about those! I used one one time on a wasp infestation in the yard. I can't imagine what it would feel like to get maced with one. Like you said, sprays 20' and has about 100 times more volume than a mace sprayer.
Condoms.
Other than that, if they re college aged kids and they don’t have the sense enough to come in out of the rain, they are on their own.
No matter what you tell them, they are going to find out for themselves.
Millions have made it through before them. Millions more will come after them.
>>Instead of Mace, buy two Spectracide Wasp/Hornet spray cans for $5 and keep one in the room, one in the car... stream shoots 20+ feet and will disable the attacker while you get away, and looks innocent until needed!!<<
Check to see if the chemical t will permanently blind someone. That would be a tough lawsuit these days. You’d be better off to kill him.