>Thoughts on using bought pollen for feeding and AFB?
I feed real pollen, often from other sources, and have never had AFB. I'd say Chalkbrood is a bigger risk from feeding pollen collected from a bottom pollen trap. A top pollen trap is much cleaner as debris falls down not up, but still if they are trying to haul the mummies out the top (as with a top trap) you could get pieces of chalkbrood mummies in the pollen.