I had some chalkbrood in one of the hives. A few fellow beeks told me to place a banana under the lid to help clear up. I thought they were pulling my leg, but apparently this is a "thing" and the internet is full of similar advice.
Well, I didn't waste a banana, and ate it myself instead. The chalkbrood cleared up in a few weeks without any intervention. If I did take up the advice it would have been easy to conclude that the banana cured the chalkbrood.
However. Is there any solid research on this? Some apparently even feed their bees ripe bananas instead of pollen sub. Are bananas useful in anyway in beekeeping?
Or is it an internet myth that won't go away?