Randy Oliver at scientificbeekeeper.org has written a lot about nosema and the steps he has taken to quantify some of the many treatments. I have been feeding 2:1 syrup and, having some Honey B Healthy on hand, so I am trying that while researching other types of treatments. The bees have cleaned he landing board up quite a lot.
The 4th OA vapor treatment was done on the 21st. I will inspect for mites after this next batch of rainstorms passes. I haven’t opened the boxes up since mid July.