and it might be worthwhile to try to get agreement in advance from insurers (among others) that it's worth pushing for, and maybe the application and cleanup could be covered by insurance(?).

The insurance companies just MIGHT pay for cleanup, but I doubt they'd pay for application.

Why would I say that?

A few years ago we had a massive windstorm in our area. We had two big trees down, and were without power for five days. I bought as much dry ice as I could and put it in our chest freezer, trying to save the food. When I tried to make a damage claim, which included the cost of the dry ice, I was told that "It's the policyholder's responsibility to minimize damage from an event."

I strongly suspect they would consider the application of this stuff to be an effort to minimize damage from a fire, which is the responsibility of and should be paid for by the homeowner.

Dave Oesterreich