I tend to load up on kingsford when the 18-20 lb bags go on sale. However, if not careful, it seems they can absorb moisture and not burn well. I usually put my in large garbage bags, tie them shut and place in large garbage cans with the lid sealed. It has worked pretty well but wondered what others did to keep the charcoal fresh. Perhaps you haven't had a problem, but with high humidity in florida, i find it doesn't burn well if it sits around.