All week, it’s been hot and humid with dark clouds threatening storms, and today was no exception.
Still, our beekeeping duties required us to suit up and treat the hives for Varroa. Because I wield the magic wand (our vaporizer), I had the added pleasure of an N95 mask and safety goggles. It was Very Hot.
Using a vaporizer to treat with oxalic acid is usually pretty simple. You block the entrances, put the powder on the little tray, slide the tray into the hive, attach the leads to a battery, and leave the vapor to permeate the hive for the alloted amount of time.
However, when you have honey supers on a hive, you have to take them off the hive to treat because oxalic acid guidelines say honey that’s been treated with OA shouldn’t be consumed by humans.
That’s how the guidelines stand at present, although the prevailing wisdom seems to be moving away from that idea because oxalic acid is a naturally occurring substance. On February 23, 2021 the FDA finalized a ruling that establishes an exemption from the requirement of a tolerance for residues of oxalic acid in honey and honeycomb.
Nonetheless, “Bee Culture” magazine says this doesn’t mean we can all start treating our hives with honey supers on. So, we either take them off to treat with oxalic acid, or we use Formic Pro, which can be used with supers.
Formic Pro also has the advantage of killing Varroa that are in cells of capped brood. But it takes longer (14-20 days instead of minutes [or in today’s case, about an hour]), can only be used in a certain temperature range, and kills some bees along with the Varroa. Since one of bees that it may kill could be the queen, this can be a serious disadvantage.
In our situation, we have a new queen in OH, Girls who hasn’t started laying and possibly a new queen who’s not yet laying or a new queen in the works in the OH, Girls split. As a result, two of our three hives have no brood to worry about.
Meanwhile, in the Kremlin, Olga’s laying is a little spotty, and we treated that hive when it arrived as a package.
We decided to use oxalic acid on all three hives even though we’d have to get the bees out of OH, Girls’ supers.
In the past, we’ve had no problem using our escape board to accomplish this.
We insert the board between the supers and the deeps with the triangles down and leave it in for twenty-four to forty-eight hours. The bees seem to find their way down into the brood boxes for the night, but have problems finding their way back up. There are always a few stragglers left in the supers and/or the board, but they’re easily dealt with.
Today, however, the bottom of the board was seething with bees.
After regrouping, The Engineer and I decided to cover the hole in the escape board and treat the hive with the board in place.
Filed under “other problems” was the fact that the front porch of the hive was also loaded with bees who didn’t take kindly to me trying to move them either in or out of the hive so I could block the entrance to treat the hive.
Then, the part of the vaporizer that actually does that blocking fell off, and we had to sort of hold it in place while the vaporizer was working.
We were about halfway through the treatment when The Engineer realized we hadn’t replaced the bottom board. This meant all the vapor that was going in the hive was coming right back out of the hive through the screen at the bottom.
It was like a slapstick movie where Laurel and Hardy take up beekeeping.
Out came the vaporizer. In went the bottom board. And we started all over again.
The bees were delighted with these developments.
Also, we discovered a few guard bees took their jobs very seriously, butting our veils repeatedly.
Have I mentioned how much I love my hat and veil?
What a relief it was to finish that hive and replace the supers and quilt box!
We’d hoped to be able to pull some frames for extraction, but though most were full of honey and nectar, none were completely capped. 😦
Our best bet for getting the bees on the escape board back into the hive seemed to be to tip it in front so they could walk in.
For comparison, here’s a photo from two years ago when we used the escape board to get bees out of the supers so we could extract.
Normally, the walking back in process takes a short time, even with lots of bees. This time, the bees on the board seemed reluctant to abandon it. The picture above was taken about thirty minutes after we finished treating, and it was over an hour later before the board was mostly empty.
Clearly, this hive is very full despite having been split a month ago, and we’ll need to keep a close eye on it, especially once the new queen starts laying.
Despite the rivulets of sweat pouring down our faces and OH, Girls’ diligent guard bees trying to convince us we should abandon our tasks, we managed to treat the other two hives without incident.
What’s next on our beekeeping schedule? We’ll need to do full hive checks on all three hives, looking to see if the new OH, Girls queen has begun laying, if Olga’s prowess at egg laying has improved, and if the split has managed to requeen.
For now, that’s all the news from the OH, Honey! beeyard.