The stuff from these stores do not have a shelf life
And therein lies another aspect of why DG is horrible: not only do they push stores that sell non-consumables out of business, but also grocers.
In terms of foodstuffs, DG pretty much only sells low-quality and -nutrition groceries with extremely long shelf lives, like chips, bottled drinks, snacks, sometimes some crappy frozen stuff squirreled away somewhere - you know: junk food. No fresh meat, poultry, fish, fruits, or vegetables, ever. So not only does DG exacerbate socioeconomic issues in poor area, but they also exacerbate and create health problems in low-income populations that they serve, because they push all the stores that sell any food or groceries of reasonable quality out of business.