Originally Posted by Outdoors
Start using blocked ice instead of cubes. With my Coleman Marine (which is white so it reflects the heat) I put two frozen milk jugs in it, load it, and then bag cubes for mixed drinks. Besides lasting longer, the milk jugs will keep you from having a cooler full of water ruining food items.
I always put all food in gallon zip lock bags to avoid that.
I do like your milk jug idea