If you have asbestos or extensive mold in your home, you're better off calling in a professional than dealing with it yourself. These noxious materials have the potential to cause health problems not only for you, but also for your family -- and in the case of asbestos, even your neighbors.
Where you may be able to deal with a limited spot of mold, there's the possibility that more mold exists than may be visible from your vantage point. And once you start excavating, mold spores will be released that can take up residence in other parts of your home. When it comes to the noxious and toxic, forget the heavy-duty respirators and goggles. Call in the pros.