It seems some charcoal users have problems with 'fleas' and some don't. I 've used charcoal off and on for years, and I've seen the same thing.I make all my own charcoal from hardwoods and also softwoods( mainly pine) .And some of my charcoal makes 'fleas'! This may be related to HOW the charcoal is made.
Some where in his posts,Frosty explains that there are three different ways to make charcoal.
Direct: where you just burn the wood
Semi-direct: build fire in container,add wood,put lid in place to stop air from entering container
Indirect: wood is placed in almost sealed container,heated externally
Look up Frosty's post......he explains much better than I do.
Most often, I just burn wood, then extinguish with a water hose......few fleas
I also use the semi-direct and indirect methods at times too.
With these 'sealed container ' methods, sometimes when remove the lid, there is cresoate...pinetar?...or other gooey stuff attached to the lid itself.
I'm just guessing, but perhaps there's a wide temperature range in which charcoal can be made. (With the container methods being a cooler burn which doesn't burn up all the volitiles.)
I haven't been scientific enough to draw any hard conclusions from this, but it's worth thinking about.
I have noticed that these different cooking methods produce charcoals which appear and burn differeintly in the forge.
So here's the question.......does all this have any bearing on the performance of the charcoal when smithing?
James