I mentioned this a while back. In bee hives, the bees block off any space wider than what
they need, or cracks in hive that leak either air or water, with mixture of pine or other
resins. It also keeps some large moth predators from being able to hide. But at times
it is a nuisance to beekeeper when he tries to remove frames to harvest honey. It sticks
the frames to the hive wall or to the cover, and when keeper breaks it loose, the bees
get angry and sting.