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  1. Diseases and Pests
    It is hot here. I'm in North Texas and it has been brutally hot. I will be robbing my bees on Friday and if I don't see brood, and I don't expect to see brood in this heat, considered treating with OAV afterward. But our nights barely get to the low 80s, daytime high is 104 today with heat...
  2. Equipment/Hardware
    Hi! I am a hobbyist beekeeper since my childhood. I am an engineer as to my occupation. In the last couple of years I was testing many different type of oxalic acid vaporizer (OAV), and fond problems with each of them. I started to develop my own, and I was testing them for a year by now. I...
  3. Equipment/Hardware
    I just got one of JohnO‘s vaps and I hate the idea of throwing out my old wand Vap. Plus, it runs off a battery and I didn't want to buy an inverter for my second Apiary that is far from any 110V power outlets. User THill made a great post about turning a wand into a chamber style exterior...
  4. Diseases and Pests
    It seems like I have read a lot of comments that suggest there may be problems using OAV late in the fall when temperatures are in the 40s. Is there some problem using OAV when the bees are loosely clustered - still a few bees venturing out during the warmest part of some days? I did a full OAV...
  5. Creating an exterior OAV treatment device

    Greetings, This is how I build the Burrell Creek Bee Supply OAV from start to finish. It is my intention to show what you will need to purchase and how to complete every step along the way. I have comments turned off to keep this posting uncluttered so please PM me if you have questions or...
  6. Beekeeping 101
    Do fall swarms ever return to the originating hive? This colony has a very full deep and very full medium and the number of bees surprised me when I took a good look today. Wall to wall bees. I'm sure it's hard to track bees, but wanted to see if anyone had large population influxes before...
  7. Bee Forum
    Background I've had bees for six years now. My hive count has steady increased to 12 production hives and about 12 nucs. Production hives looked great during the flow and produced 120 pounds of honey per hive. Treatment method I treat with OAV only with a ProVap 110, solid bottom boards and...
  8. Bee Forum
    So I have been keeping 2 hives for a few years now. Still pretty inexperienced and like to bounce alot of things off a mentor I had helping me a great deal the first 2 or so seasons. I know he has had good success doing OAV in early spring and Novemberish and MAQs in August. I was set to do my...
  9. Equipment/Hardware
    Hi all, I have made my own version of common Oxalic Acid vaporizers but mine runs on 110VAC and has a digital PID temperature controller. I don't have a 12V battery to lug around but my hives are close to the house and I have an extension cord! I am thinking of making more to sell in the "for...
  10. Diseases and Pests
    I live in south central Kansas and typically keep a few colonies of bees for honey production. After several seasons of heavy loss due to varroa, my partner and I decided to invest in a vaporizer to treat our colonies. My question is timing. I've read material by Randy Oliver and others, and...
  11. Diseases and Pests
    Hey all any use a fogger for OA treatment? I saw a video with a guy using this method and wanted to if anyone was doing this
    oav
  12. Diseases and Pests
    Does anyone know where can I buy one similar to the one in the below video? It seems very easy to operate and fast. It's Italian I believe. I would love to find one to buy, but could not find where can I buy it from. However I don't know how effective it is. Please help...
    oav
  13. Bee Forum
    Hello, I am a relatively new beekeeper and am planing to use oxalic acid vaporization as a varroa mite prevention. Unfortunately, I've seen a few on my bees, whenever they were hanging out in front of the hive bottom board. I don't think the mite count is too many, because observing them almost...
  14. Diseases and Pests
    Hey guys I'm about treat with OAV but I'm feeding still. I use internal feeders. Should I remove them? I get removing the supers. But sugar water not sure
    oav
  15. Diseases and Pests
    Has anyone been successfully vaporizing their nucs..dbl deep nuc bodies? If so, what dose are you using..1/2 scoop (Gm)?
  16. Diseases and Pests
    I've heard of someone vaporizing from the top of the hive. Does anyone do that? What's the technique? Is it just as effective as placing vaporizer on bottom board? What if I made a 3" spacer with a notch for the vaporizer handle and sat it above top deep, sat vaporizer on top bars (with a small...
  17. Diseases and Pests
    I'm getting ready to do my first course of varroa treatments, and in doing so, have been getting all my safety gear together. This lead me to think bout the fact that, if I need respirator, goggles, etc..., what about my neighbors? Does the OAV dissipate quickly enough that, if you're not...
  18. Bee Forum
    Does it make since for me to vaporize at dusk when more bees are in the hive? One would think this would hit more of the colony? What's the downside? Thanks in advance for thoughts on this topic.
  19. Diseases and Pests
    I just started using OAV and I wonder how long do you keep the hive sealed after treatment. The instructions say up to 10 min after treatment, but I see many in the YouTube videos don't continue to seal the hive at all after the 2:30 min treatment. Interested to hear opinion on what others do...
    oav
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