today i finally got to clean 2 hives that i lost. One just plain starved the other i think might have had nosema. The hive was my stongest one this past summer with a total of 8 supers produced. That was great for a drought! The queen was 2 years old about to be 3. One day 3 weeks ago on a warm afternoon I noticed robbing going on and took a closer look only to see some feces on the outside of the hive. Not like what I have seen in photos here. I blocked the entrance and tried to contol the active. I removed the block the next moring and replace with entrace reducer. Some active not much more feces on the front but at the top of the supers some, but small light scattering. The hive died. One old beek told me that is probably was not nosema but a lost queen and robbing that caused the death. So today when I cleaned the hive I found some feces on the frames themselves on the endbars not the comb. My question is since there is alot of pollen in the comb is it safe to put out for the others to use? I'm thinking not since I just read all the articles about nosema a &c. What do I need to do? Stil very much a beginner!