I have found as I travel I am consuming the stuffed refrigerator items and not always in a position to keep re-stuffing every time I use something. Also, taking food and things you do not need just to fill spaces seems like a waste and only adds weight and more work loading and unloading for the trip. My Shelf Hogs just lay there always waiting for me to need them. I also do not limit my use to the refrigerator. I use it to hold all kinds of things in place in overheads and medicine cabinets too. Since they are so flat I simply pull one out of a drawer and fill it to the right amount and use it to take up the new space until I can shop again.