Have any of you had problems with grain weevils? The last 2 bags of barley that I purchased from 2 different feed stores (the grain came from 2 different sources) have had weevils. One bag had them within 1 week of purchase. I have started putting the 50 lb bags of grain in my chest freezer as soon as I bring them home and leave them there for 3 weeks to, hopefully, kill any weevils, larva, and eggs.