I collected a plum stem today - free from a really nice guy - but when I started to split it there came out clouds of wood dust, the cambiium has been completely eaten away. I have no idea of the history of the wood, but I suspect a standing dead stem. There don't seem to be any galleries beyond the sapwood. I will cut off all the damaged timber but then what should I do? The heartwood seems in pretty good shape but I don't want to introduce this timber to my wood store until I know its residents are all gone.