I found chalkbrood in one of my hives about 15  years ago and a  older and 
wiser mentor advised me to put white bread under the brood.  I  did it and the 
problem did disappear.  Is there any scientific basis for  this "phenomenon" or 
was it mother nature? I suspect now the bees just  re-queened.  
Unfortunately, I didn't mark queens then,(was afraid I would  injure them).
 
George Williams
Hobbyist in Florida

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