Cindi; I'm glad that you have something to fight the varroa mite. But from what you say you cannot use oxalic acid while brood is present. Can you use it when you are collecting surplus honey? What about formic acid? Can you use it whenever mites are a threat? I'm not trying to be a smart A-- I'm asking because i don't know.
Unlike some parts of this country where the queen stops laying for a period from late fall to early Feb. It is not that way in my area. It is normal to have brood year round. Not as much this time of year from 1/2 to 1-1/2 frames in each colony.
I can vaporize with vinegar anytime the bee cluster is broken. While brood is present and While collecting surplus honey. I'm not contaminating the comb in my brood chambers or the comb in my honey supers 25% vinegar vapor does not harm the bees the honey or the beekeeper. Can you honestly and truthfuly make that statement? There is an old saying in the bee biz-what ever it takes, do it. If it works for you do it. An old beekeeper friend said "the only consistency in beekeeping is the inconsistency in beekeeping.
I have found this to be very true. Charlie
Here is an interesting read, it is just an example of one of the studies that are available from the EU on use of oxalic acid.
This is the kind of information/studies I would like to see on acetic acid.
I'm not contaminating the comb in my brood chambers or the comb in my honey supers 25% vinegar vapor does not harm the bees the honey or the beekeeper. Can you honestly and truthfuly make that statement?
Can you honestly say that either? Where are the studies showing this? How do you know the acetic acid levels aren't higher in your hives/honey/comb?
I am glad acetic acid is working for you, but I also dealt with a lot of folks who swore up and down that essential oils where the answer. Needless to say they weren't the answer for me and I continued to loose hives until I started OA vaporizing. There is plenty of studies/data available from the EU and many many years of experience with OA. Until there is data available for acetic acid, most people will be skeptical. Unfortunately we have all lived thru too many snake oil salesmen. The fact that the manufacture does not publish any studies, and would file a lawsuit against a beekeeping organization for publishing the results of demo/test just adds to my concern. http://pets.groups.yahoo.com/group/Apis_Newsletter/message/22
Let's keep in mind that oxalic acid is an organic acid just like acetic acid and naturally occurs in nature. Vegetables like broccoli, spinach, and rhubarb are high in oxalic acid.
One more time for the record
I am not looking to get into a peeing match of oxalic vs. acetic (nor is Cindi, I think we are both interested in learning more). Acetic meets and works for your needs, and oxalic meets and works for my needs. I truely don't believe there is one "best" answer for everyone. I am interested in hearing more about acetic, but unfortunately there is not much info available.
BTW, thanks for the picture of your setup. Since there is no info available for acetic treatment, I have some questions if you don't mind.