David Eyre wrote: > I am left with a simple conclusion, FGMO works, to produce good > results as the hive gets bigger, either increase the volume or > frequency of the treatment. > Comments? You didn't say whether or not you also used control nucs without the treatment, or whether the nucs were made up from Apistan treated mother colonies. In the absence of controls, all these observations are simply that: observations. The first step in the scientific method, but certainly no basis for making any kind of conclusion. If you have no varroa, and your aim is production rather than science, it is perfectly fine. Yet such observations must be verified by controlled scientific experiments by others as well. Ted Fischer Dexter, Michigan USA