A few years ago we left the house for the holidays (about 5 weeks) and came home to a big mess in the kitchen. Seems some little mouse monster had found his way into the warm kitchen and run a muck in the pantry chewing holes in every bag and box that I had on the shelves. DH and I had been purchasing PB at Sam's Club for years and saving the large empty jars after removing the labels. After throwing out everything in the pantry and purchasing replacements I transferred contents of bags and boxes into the empty jars. No floppy bags to deal with, they are mouse proof (although this little monster is long gone now), I can see what I need clearly, and they stack. When our granddaughter visited last summer she opened the pantry closet, laughed, and exclaimed, "You two eat entirely too much peanut butter!"
We are still enjoying our peanut butter and have a large box of empty jars in the storage closet for emergencies. Ann in TN