By putting ready to eat, commercial off the shelf foods into boxes with other items that you may also need to consume them will possibly help to fend off scavengers who may enter your place of refuge during a SHTF event. Being that food can be stored inside the box causes the scavenger to look for the most obvious items to take since they will be under stress to get into and out of a location where there may be food. If the box full of ready to eat foods is placed among other unmarked boxes, they scavenger will most likely not take the time to open each box looking for food. Using your own making system will also prevent removal while left unattended.
I keep a separate paper and digital document to list the items inside of my emergency food boxes for later use when taking inventory and cost calculations. rotate date and nutritional information.