I've been using Turmans from a local dealer here on The Eastern Shore and they burn fine. I've also picked up a half ton of Clean Energys from Lowes in Virginia Beach and they have been less than great. I have a theory, and I may be wrong but..... Lowes stores their pellets in their outdoor Garden dept. It is covered, (under a roofed area) and palletized, but I'm thinking moisture from the air and temp changes, must be having an effect! What do you think?