Bees won't go into Honey Supers
I have a very strong hive which is jam packed with bees. The problem is that all of the bees are staying in the two deep supers and not going up into the honey supers. I don't know if it is the queen excluder which is deterring them or what. A few bees have made it up and drawn out a few combs, but nothing else. Any advice would be appreciated to get them up there. Thanks.