I-Team: What's in Your Walls?

I-Team: What's in Your Walls?
http://www.todaystmj4.com/news/local/84191972.html

"A big I-Team Investigation uncovers hidden dangers inside Milwaukee area homes. We're not talking about lead paint and pipes, asbestos, or mold. We all know to watch out for those. This is a warning about toxic chemicals that seep into the walls, floors, and ceilings, and stay there for years. The biggest problem: people in our area aren't always warned before they move in."