Food Grade Diatomaceous Earth (FG DE) for rotting or painful teeth and rotting wounds
The fastest acting use I have experienced for FG DE is for teeth. I have a lot of teeth problems from a narrow jaw and bad dentist interventions. When I get a tooth pain, I place a wad of DE (made into a dough like blob with a drop of water) on the offending tooth, clamp down my teeth and go to sleep. Right as rain in the morning. And this is the report with everyone I've prescribed it to. Unfailingly. But use it the first sign of pain you get.
What more, two teeth that the dentists said have to be pulled off six years ago are serving me fine after my having given them the DE wad treatment for a week continuously.
The DE just pulls out any kind of necrosis.
And that's the second great thing I've seen it work its magic on. It also saved the paw of my cat, which was just rotting and the digits were falling off. Dipped her paw into DE, and the whole thing became a hard lump. But finally, the paw stopped rotting and whatever was left of the paw was saved.
Same thing with another cat I recommended it for. Another cat had an anal sac, with a hole as deep as the first digit of my index finger, and a foul smell. I stuffed it with DE multiple times in a day. After two days reduced application to once a day. By the seventh day, even the scar was barely visible.