I need a big time primer on this issue. How do ants bother bees? I really don't know. I have a sort of an inner cover on a couple of top bar hives and often I have ants building on these. I just shake them off when I check on the bees and they start rebuilding right away. Do they get in the hive? Do they steal honey? Kill or bother bees? Formic acid smell? Other? ...???
I have not seen ants getting in the hive, mostly they stick to the outside. Since I don't treat for mites I was hoping the formic acid left by ants might even help somewhat. (But that might be just superstition and wishful thinking on my part.)