I'm paranoid about hornets being in my car. I found three nests in it and now, even though the nests are gone, I'm still scared shitless that they're going to attack me while I'm driving. It sucks.
just get an aerosol can like WD-40 and a lighter and point the can at the hornet nests, and spray into the lighter flame.
Never mind the car.... Set the whole thing ablaze Spray some poison in the door jams and in the creases in the frame
hornets are solitary? they dont group up and attack you lol once the nest is gone, and you air out the car, plus put bug spray in crevices and all thru teh engine, wherever its warm. jsut remember at most there would be one or two hornets, and youd hear them flying caus hornets are usually pretty loud arent they?
I got this can of hornet and wasp spray at the hardware store because we have a hornet problem at work. That can sprays a 20 foot jet. You can literally take a hornet down from 20 feet if you have good aim. A dude that works here got stung by one of them and he grabs two cans of that stuff and creeps around all commando style whenever he heres one. Really funny shit.
He a big dude and he gets really paranoid and runs around. Its like watching a chris farley skit. dude just goes nuts.