Hi David & Jen
I don't know your email address! Hence this somewhat odd form of communicating.
I came across an article in our local news that might be of interest -
https://www.stuff.co.nz/nelson-mail/news/109409445/a-recent-study-has-found-vespex-has-no-negative-effect-on-beehives
It is a chemical that gets rid of wasps.
Good luck

Elaine (escoble4nz@gmail.com)