WHAT DOES WOOD PELLET FUEL MEAN?

I'm receiving close to 2 days on 40lbs. Took a couple of days to obtain modified to burn up clean up. Doorway seal leaked on first run and each time it restarted. New door seal and my trim is at neg two-three. Burning a good cleanse fireplace. The fuel in Indiana just isn't terrific I clean up it daily.I'd obtain more if they had been authentic che