Probably comes from grain storage locations in warmer climates then. I can't find anyone talking about these online in my local language which is to the north, we have no native pests like these so they all only live inside houses. There are other weevils, but they are very rare and mostly comes from other sources and starts eating your bread etc, they don't come from packages you get in the store. Nobody said there is a problem storing these things long term, instead you get rid of them by getting rid of all their eggs in your kitchen.