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					Originally Posted by Griff
					
				 
				They dye it. Don't ask me why. 
			
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 Think thats' to stop the creepy-crawlies eating their way through it and rendering it ineffective - only guessing, though.
We burn pine in our wood-burning stove - as long as it's reasonably seasioned it doesn't give that much trouble in samll quantities - not enough anyway to worry about clogging the stack. Otehrwise the chimenea route suggested by Elspode sounds a good alternative.