Okay, I admit it isn't real firewood, but none the less I have a question. I live in North Idaho. but never heard of this product until reading about it here. I went to town the other day and saw some for sale. Now to the question. Is there a significant difference between the NIEL and a Prestolog? Can they be used without problems in a cat stove (BK King)? I guess that was two questions, but I am curious.