I can say for sure that I have never had a moldy dehydrated meal that I made. Mold needs moisture. I have premade and stored meals like spaghetti for over a year and it was fine. The only problem I ever had was some packaged pasta mixes that I cooked and dehydrated. They had butter in them and they started to taste a bit for lack of a better word, stale or spoiled. But that was after storing them for more than a week in a baggy not refrigerated. If I store them in the fridge they were fine for a few days after I took them out. Now I just skip the butter.