I like to treat my hives with OAV at least once a month during winter when the temps hit the 40s and I see some activity. I use a Johnno's easy vap vaporizer. 15 hives took less than 30 minutes. Thank Treat For Varroa Mites Johno's Easy Vap (Oxalic Acid) YouTube InstantVap OA Vaporizer & Accessories The Bee Supply Oxalic Acid Vaporizers with all the new changes which one do you use? Beesource Beekeeping Forums Oxalic Acid vaporizer. Johno's Easy Vap. I have 2 for sale. $75 each plus postage.
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