Re: oxalic acid dribble
Dan, I think this is a phenomena that happens pretty regularly, I don't know why. My theory (in my situation) is that it is probably a queen that escaped our requeening process in the spring as we do some combining and occassionally end up with a second queen, also perhaps drone drift. In reviewing our testing results from last September I see universally low single digit mite numbers in 24 samples pulled in 4 yards and a single reading in the high teens. These readings are post thymol and pre oxalic. I have seen this for years I no longer find it concerning because it dosent appear to be worsening. I just chalk it up to the impossibility of uniformity in all things beekeeping.
"Ve are too soon olt und too late schmart."- A nameless German philosopher