While I'm in a spring/outdoor mood, I'll take a moment to discuss Chromated Copper Arsenate, or CCA. It's used to treat wood and keep the bugs out - but it's just another organic arsenical lurking in your life. I'd rather have the bugs. Ever wonder why that privacy fence, deck or playground equipment had a green hue - it's this stuff. The EPA limited its residential use in 2003, however, much of the construction in our homes predates this mandate and so you need to be aware. The worst part about CCA treated wood is that the CCA leaches out over time, so the older materials that haven't been properly maintained are the most dangerous. If you have any of this material in your home, be very careful when you dispose of it! No burning. I'd recommend gloves.
Here is a link for more info:
http://www.epa.gov/oppad001/reregistration/cca/
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