I just visited my buddy in Littleton, CO. He heats his house with (2) pellet inserts. I drove by a pellet mill in Kremmling, CO that makes their pellets from beetle kill pine. Guess what my buddy got at Wal Mart....PENNINGTON'S. FWIW, he said he hates them. All those good western pellets and he get's Pennington's....sheesh.