Re: CCD or something different?
John Galt 1, I know from your concern that this is not something you saw coming nor were properly prepared for. Powdered sugar is totally ineffective as a mite contol, but can be used to get a rough idea as to your infestation level. As Dan says, Nov. is way too late. Next year start a real treatment in August, or as soon as honey supers are pulled depending on the treatment chosen. Then perhaps your bees won't die from PPB. (Piss poor beekeeping). Don't shoot me, I'm just the messanger!
Fyi, I lost three hives my first year to PPB also.
Thankfully, the bees are smarter than I am. They are doing well, in spite of my efforts to help them.