I recently attended our monthly meeting of the MCBA (Montgomery County Beekeepers Association) on hive inspection. Our invited speaker was Rob Snyder, who worked as an inspector for several years, and is currently working with Penn State U. with their continuing studies of honeybees. He informed us that exposure of Fumagillin-B to the UV rays of sunlight rendered it ineffective. He didn't know how long of an exposure caused this, but that it was only recently discovered. My question to him was "what possible negative effect would feeding it to the bees have? He said it as of now is unknown. Has anyone else heard of this? What effect(s) could this have on the bees?