I suggest that shoppers pay attention to the "use by" dates on any food / drink. I only purchase such items from any dollar type stores if I'm going to immediately use them (chips, candy, etc).

Although not dollar stores I once purchased a few pantry items from Bargain Hunt and Ollie's only to realize there was only a week or two left.

Dollar stores have their place for me with the occasional novel need (small brushes, gift cards and wrapping). I have a decent glass decanter that I use for coffee.