Get yourself 7 of those tall canister tupperware containers (the kind with the screw on lid), mark them for each day of the week with a permanent marker (Sunday, Monday, etc.) USE them for leftovers, (at least for the ones you don't freeze). Then when each day rolls around again a week later, if there is still food in it FEED IT TO THE CHICKENS, wash well and put the new leftovers in . . . This keeps leftovers up-to-date, prevents unwanted science experiments, saves you from having to answer the question "Is this still ok to eat?" and, it also keeps the chickens happy magic! . . . a less cluttered frig.