Zaldude

When its really cold out the vapor pressure of the smelly stuff in your food is very low (It doesn't smell much) and the chances are that there aren't any bears in the area anyway as they like to hibernate. If its below 40 degrees the food all goes into my vestibule and I've never had a problem. In fact the only animal that ever got any of my food was a chipmunk which is why when I do hang my food, its often hanging from a branch 5 feet off the ground.
Jim