I bought 1 ton of these pellets at Home Depot about a month ago. These are the absolute worst pellets. After 6 hours of burning these pellets, I have to clean out my burn pot. There is pumice stone in the burn pot. If I wait over a day to clean, the burn pot is almost solid pumice. I have a Quadra fire Mt Vernon stove and it is set at the lowest feed rate and on med to high setting. I wonder how much Bark, soil and overall filler garbage is added to these pellets????