, , , Unfortunately, useful only with treatment!

This simply is related only to the fact that the chips have so saturated with resin and are thus literally saturated, so a lighting almost exclusively with a butane lighter is possible. The only advantage is that the chips need a relatively long time they bite are burned, which is due to the high resin content.

A video called "Maya Dust Vs. Dryer Lint" on YouTube can confirm this.

Only after I had post-dried chips under high heat something worked igniting a fire steel bit better.

CONCLUSION:
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There are far better tinder which you look at cost of home (charred cotton, Trocknerflusen, jute string, alcohol wipes, fine steel wool, tampons ...) or even for nothing in nature (cotton grass, dandelions, old man's beard, empty bird nests) can get.

I have deliberately not mentioned as a birchbark any nature lover should know that improper removal of the bark has a very serious damage to the tree to follow! Birch bark so please remove only in absolute emergencies, if they can be picked up directly from the ground not just hanging by a thread from the tree or.