I had to try it! I put the 6 cups in my Whitfield yesterday. The flame "appears" a little more active but that is about it. Nothing else different in my opinion, just a real expensive 3.5 pounds of "pellets".
How was the heat? Any fines? Did you measure the ash when you were done? What was the BTU rating? If I'm gonna buy these to heat my house I need to know some of this stuff.