I just treated the split for varroa mites using a formic acid pad. They got pretty loud when I placed the pad in the hive, making me think that they aren't exactly thrilled with its presence. I hadn't realized how hard it is on the bees until I read that there is a fourteen day brood mortality. Not sure what that means exactly, but it doesn't sound good for a hive that's just starting to produce brood again. It's kind of a which is worse situation...mites or formic acid? The mite load was pretty high thanks to the fact that this hive got pretty much all of the drone brood from the split. And they're still making more drones!
I have to leave the formic acid on the hive for twenty-one days. Fun.
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