A week ago, I started treating my hives with the first (of three) doses of HopGuard. Prior to the treatment, there were plenty of SHB in the hives: 90s, humid weather in Atlanta, you get the picture. A week later, today, I gave them the second dose. The bees were gentle and organized. But I also noticed that the hives were completely free of SHB: none in the outer or inner cover, and none between the deeps. I did not do a thorough inspection but I would have seen the SHB if they were there. Does HopGuard repel SHB from the hives? Do you know? I am very satisfied with the results so far: organic, easy to apply, works with temperatures in 90s, no obstruction in the hives as far as I can see.