I'm in the process of replacing my back fence. One of the existing posts was damaged (crushed) during a tree fall. After finally digging this out, I discovered one of these in it.
What I can't seem to do is get the rest of the wood that's in there out. I realise that they aren't expensive, but for curiosity's sake as much as anything, I'd like to know if there's a tried and trusted method for this kind of thing.