I just purchased 2 bags of pellets from Michigan Wood Pellet (Grayling Michigan) and noticed that they listed the ash content as "less than 0.3%". All the other pellets that I have purchased say "less than 1%". I haven't had the opertunity to burn them yet but am looking forward to seeing if there is any noticible difference in ash content. I did notice that the pellets are the lightest in color that I have ever seen.