I use large size zip lock bags to bring in the equipment from the cold. I place the equipment in the zip lock bag while out of doors and squeeze the excess air out of the bag while sealing the bag. Then when I bring the equipment inside the condensation occurs on the bag instead of on the equipment. I only do this when the temperature is really cold outside. I doubt I would bother with it at Prince Rupert. If it was cold enough to worry about condensation, I doubt the bears would be out and about.