Crawl Space Repair - Damage to pipes and other equipment in the crawlspace

Many pipes are held in place by metal hangers. We build houses with nail and use metal fittings for several things. The fiberglass insulation gets held in place with metal pins. All of these things can rust and create a dangerous environment. And what about the electrical wires in the crawlspace? Imagine standing in water and touching an exposed wire, that is very bad.