I checked up on my bees today and added sugar and a pollen patty. My bees are alive and consuming dry sugar and pollen substitute, but I am starting to get worried about the amount of poop on the front wall of the hive: [attachment=0:13x26ffw]IMG_0127.JPG[/attachment:13x26ffw] Is this symptomatic of nosema, or is it just the result of 3 months worth of cleansing sorties by the bees on a white background? If it is nosema, is there anything I can do to help the bees right now? I do have an entrance feeder on this hive, because the daytime temperatures have been going into the 40s sometimes, and it looks like they have consumed about a pint of that syrup in the past 10 days. Still, February is not over yet, nighttime temperatures are consistently below freezing, and the bees in that hive are clustered in the top box (that's why I am still feeding them dry sugar). Would it help to refill that jar with Fumagillin - laced syrup, or is it too cold for that? Other than antibiotic treatment, are there any other ways to help bees overcome a nosema infection? Thanks very much.