OK, I know all about this. And on accident found the perfect way to kill wasps.
Gum-out carburettor cleaner. You see, one time I was working on my old Honda, trying to tune it up and clean some gunk that always accumulated in the primary venturi. It was a hot Summer day, and the wasps were buzzing around like mad. Our carport was filled with the nests, to the point where it was quite hazardous to even park in it.
So there I was, spraying down the outside of the carb just for good measure, when one of those damn lethal little stinging helicopters buzzes right past my ear. Of course, I panic, and back away quickly, squealing like a little girl. And I spray the Gum-out directly on the wasp as it flies towards me.
Then I let out a scream as it hit my leg, bounced off, and dropped into the grass. The thing was dead within half a second - in fact, it was completely dead before it hit my leg.
So I got a big can of the Gum-out, and tried going after some more wasps. I found that any incidental contact at all, the the things would die in less than a second.
So I got brave, got the little plastic wand attachment, and went into the carport and sprayed each nest in turn.
No wasps ever emerged alive. Some would drop out dead, but typically the nest would dissolve into a shapeless mass of paper and dead wasps. Wasps that would land on the nest would die instantly as well.
I was most pleased, and my mother was amazed that all the wasps were gone within 5 minutes.
Is Gum-out the best thing to be spraying around? Well, it is highly volatile, and does not leave a flammable residue as much as other items. And when you are dealing with the little buzzing helicopters of death, I say praise God and pass the Gum-out!
Una