Wanted to see if anyone else out there has had any issues like I've just experience with applying Hopguard or Hopguard II. Also want to share this so that those thinking of its use will be careful. I would post pics of my collapsed hive, but I am not seeing an option to do so...maybe I don't have posting rights yet???
Background, I have several NUC/single deeps that I was going to try to over winter and was looking for a mite treatment that I could apply to a smaller hive. Thought Hopguard II might be a good, less harmful treatment method. Also, I applied the strips in both cases below as the directions said, one strip per full 5 frames of bees. Each hive that was killed was a single deep and two strips were applied separated by at least two frames. This is my 5th year keeping bees, I have 15 hives, and my hives have always been healthy (save for the winter die offs we all experience).
I first noticed an issue two weeks ago when I applied Hopguard II to a Hive at a friends house that we were noticing had deformed wing virus. To make a long story short, the hive collapsed within that two week period (don't know the exact timing since my friend did not check on them in that two week period). When I opened it up I immediately noticed a large number of bees on the top of the inner cover dead. Upon opening the hive, there were maybe two frames of bees left out of the ten the hive had prior. All around the Hopguard strips were dead bees. And covering the entire bottom board was the other hive bees dead. I was puzzled because my friend has 5 other hives and all was well with them. I thought that maybe something had happened causing the entrance to be plugged and they overheated killing them as that's all I could figure would wipe an entire hive out inside the hive at this time of year.
Now without a doubt, I know that it was a Hopguard II kill because I just applied it to a beautiful, thriving single deep hive not 24 hours ago, and it too has been wiped out in the exact way (wish I could post the pics of the carnage). Only this time I know that it was not an over heating issue since about a quarter of the hive was found bearding outside it in the AM and bees were still coming and going. The carnage inside the hive was complete though, just like the first.
Any suggestions on what I should do now...???...contact the manufacturer, etc?? I am at a loss...