Technically the bees don't cause much damage. They will do things like remove insulation. Fermented honey, moisture, ants, wax moths, etc are all more damaging

Technically the bees don't cause much damage. They will do things like remove insulation. Fermented honey, moisture, ants, wax moths, etc are all more damaging but technically a result of the bees. At least in an observation hive you can see what's happening before it spreads.