Cleaning Up After A Fire
I have a post about dealing with the ash after a wildfire that people find useful: Cleaning Up.
If you have large animals and outdoor water troughs that have ash in them, if you can’t flush them out, you can add lemon juice, vinegar, even beer, to lower the pH. Wood ash is caustic, as in you add wood ash to water to make lye. If you have a pool chemical kit, there should be a pH test included to check the standing water outside that your animals might drink from. Buying one if you don’t have one, would be cheaper than a vet visit.