Currently I am feeding my pullets Purina All Flock crumbles, and while I have had this problem before, in the early spring, before there are many flowers, the bees seem worse than ever and in the dead of August! They swarm and roll in the crumble?? I have killed many of them, but they just keep coming. The hens are very hesitant to get near their feed, the Rooster will, but only briefly. If they were eating as usual I wouldn't care, but I worry that they are not eating enough and will eat less desirable matter out of desperation. Any suggestions?