For ALL NEW BEEKEEPERS reading this ...
I don't know how many times it has to be said ...
OPEN FEEDING IS A VERY STUPID IDEA - in all circumstances.
If you wash the inside of the extractor, initially, with a smaller amount of clean cold water and dissolve as much of the honey that you can then the residual 'honey water' makes a great basis for mead (you will have to add some more honey to get the SG up but why waste the washings). Alternatively, the washings can be fed back to your bees in a normal rapid feeder or Ashworth feeder on the hive.