How can my outdoor deck contain arsenic?

How can my outdoor deck contain arsenic?

Gary Ginsberg (Toxicologist) gives expert video advice on: What are the sources of toxins in my yard and garden?; How do persistent pesticides collect around my home?; How can my outdoor deck contain arsenic? and more...

We need to preserve our outdoor wood structures because they tend to rot and fall apart from natural weathering, the elements, and also from biological growth. Mold tends to grow on these things. So, putting some pesticide into outdoor wood has been a good thing. It has kept these structures intact so they don't fall apart over time.