One of the most successful species on the planet would find your foodstuffs (the common rat) if you stored them in said locations. You might as well have a big party and invite some of your favorite looters.

If you cannot shelter in place, take what you can and distribute that which you don't need or can't carry to those around you who you deem most deserving. I don't know the formula for differentiating such things. In a postapocalyptic world, who would be a good guy? You are competing with everyone else for resources, as they are depleted, civility will most definitely wane.