I am in my second season backyard beekeeping. My one hive made it through winter full of bees and I am now in the process of trying to make a second hive with the "simulated emergency method". I don't really know what I am doing but I read a lot. I am following as much of what Michael Bush advises as possible, which means 10 frames (or is there 11), 4.9mm wax foundation, mixed with frames which only have a strip of foundation, top entrance,no chemicals, only feed them honey. Anyhow so far, so good. I have varroa mites and have been dusting them with sugar. I have a screened bottomed board and I count the mites every day to make sure there is a manageable amount. I make my own powdered sugar and dust them a lot. I am assuming that this is harmless and I dust them frequently. Is that okay?