Is there a way of destroying a wasps nest without intentionally killing any of the wasps? For example removing the nest and placing it somewhere else, or destroying the nest without intending to kill? Of course you would need strong protection - maybe a bee keeper suit or something, but at least you wouldn't be killing. Or can they be fumigated out?
I've don't know much about how insect exterminators work, but maybe they know non-lethal ways, or are at least willing to try them? - if you don't want to deal with the wasps yourself.
I think any method would only count as breaking the first precept if you intentionally killed the wasps.
"If beings knew, as I know, the results of giving & sharing, they would not eat without having given, nor would the stain of miserliness overcome their minds. Even if it were their last bite, their last mouthful, they would not eat without having shared."