I used mothballs to get rid of bees trying to nest in my radiation shield with success. It might work on wasps too but since we don't have (much of) them here in northern Europe and the bees here are European in origin, I can't guarantee any success in the U.S., though.
Weather Station Operator
Finland Weather Exchange (FinWX)
--- In firstname.lastname@example.org, "carlgenlnrt" <carlgenlnrt@...> wrote:
> Does anybody have an idea on how to keep wasps out of the radiation shield? The only thing I can think of is to take some screen and maybe paint it white and install on the inside.