At the shelters they have bear cables to hang your food bag from. In the picture I have both our food bags hanging. I also put a garbage bag over them in case it rains. Inside the food bag is a plastic zip top bag that is Oder proof, so animals can't smell the food. The fabric of our food bag is very strong so mice, and bears, can't tear it.
We met a guy last night that had mice get into his food bag to get his trail mix.