Boiling is the way to go imo if it's small enough and/or you have a pot large enough. Will accomplish in an hour or so (depending on the piece, of course) what it can take a few weeks of typical soaking in hot water in terms of releasing tannins, and kill of just about anything you'd normally worry about. But I've also successfully soaked pieces in a tub in the hottest water possible. Difference with boiling ime is I've been able to immediately place boiled pieces in a tank as soon as tannins are down to the level I'm looking for. Actually, I thought I'd look for some type of used large roasting pan or something similar that could straddle two burners for longer pieces.
If you bleach (which is what I used to do) you'd need to either let it air dry until no more smell of bleach or soak in something like Prime for a while imo.
I'm not an expert on wood species as far as which are safe, etc. and I've collected stuff that I didn't know what it was exactly anyway, so I do like to test something new on a cheaper fish, but so far no problems at all with whatever I've collected.
