- I have used it for years (after being told by others )that they put it in sryup to help prevent fermenting, at a rate of a cup to about 200 gallons. I don't think this is anywhere strong enough for nosema,or any ccd problems as we lost about 70% last winter here in florida to ccd. At about 1 to 100 it will kill most bacteria as a cleaner. I plan to try using it soon during feeding for the next few months of spliting. Bees in florida seem to have liking for swimming pools as a water source,which tells me that it is not ofensive to them. I'm think it has some merit worth looking at in general. ****************************************************** * Full guidelines for BEE-L posting are at: * * http://www.honeybeeworld.com/bee-l/guidelines.htm * ******************************************************