I ran them through without soap, of course, on the 'pot scrubber' setting AND the dry cycle. They turned out fine, I think. No clue how they'll do in water yet - no tank to put them in. I may dump them in the tank for the duration of leak testing - that should bring out any tannins that are left. Prior to the wash they sat in a tank of water for ~1.5 weeks.
Got the idea here: http://gwapa.org/wordpress/2009/01/j...ting/#more-366
* Find some in a fast-moving stream
* If not from stream, soak in outdoor pond for a few months to remove tannins and waterlog the wood
* Always use dead wood
* Hardwoods only, nothing you can dent with a fingernail
* No pine/red cedar - toxic