I burned some older than those this season. I dug some bags out during the 'longest pellet' contest around Christmas. One bag of Pennywise I found was at least 3, maybe 4 years old. My stove didn't care one bit.
I don't think wood goes stale or has a 'best if burned by XX' date. Keep them dry and you should be fine.
I don't think wood goes stale or has a 'best if burned by XX' date. Keep them dry and you should be fine.