may do some damage. All of the “Queenless” Russian hives are producing lots of brood. So the introduction technique worked well. Riding that emotional high made it tougher to realize in my next yard that there is a potentially big problem. The two hives there with honey supers both have shot gun like brood patterns, and what appears to be EFB. I spent some time today reading up on EFB and I’ll go back tomorrow to do some further testing.