My customer had a fire in his rental house. Some guests were staying there and just before heading out to dinner smelled then saw smoke. They called 911, VFD showed up and went in the crawl space to find a fire that was already out. Some critter chewed the wires causing a short. The insulation caught, started burning up the wall and melted the CPVC pipe which sprayed water and doused the fire. But for that lucky chance the whole place would have burned. It was in the back corner and very hard to get to even if the firemen had been right there.
Like I said VERY lucky.
Like I said VERY lucky.