I had some get into an empty nuc with foundation. There were four spots I cleaned fairly well thinking the bees would take care of what you are describing. They did not. If it happens again I am going to just cut it out with a hole saw or a jig saw. I'm pretty sure they will then fix it. Let us know how whatever you do works out.
A forum community dedicated to beekeeping, bee owners and enthusiasts. Come join the discussion about breeding, honey production, health, behavior, hives, housing, adopting, care, classifieds, and more!