Hi Tim,
I have never tried mint. I also know that a lot of wasps will hunt for bugs for themselves or their young. I would suggest trying the mint, but more for the flowers. Planting a bigger variety of flowering plants
should bring in more bugs, and possibly distract from your raspberries. More bugs flying around, more food for them to eat that is not raspberries.
"The future is something which everyone reaches at the rate of sixty minutes an hour, whatever he does, whoever he is." C.S. Lewis
"When the whole world is running towards a cliff, he who is running in the opposite direction appears to have lost his mind." C.S. Lewis