We have used it many times. I always keep it around. Buddy Underwood just lives a few miles from us and we have known him for over 30 years. I know of nothing better for flesh wounds. I have other things I like better below the knee or hock, but if muscle is involved or the area has been 'degloved', I have never seen anything an better.
I have never seen a wound get infected or have not seen flies bother one bad after I started using it.
You get best results if you NEVER put water on it after the initial clean-up -- NEVER. Never clean it up in between applications. Just wipe the scabs off with a dry paper towel and re-apply it and put plenty of baking powder on it while it is still wet with the medicine.
Here is a link to Buddy's website showing some of the horses it has healed up. I have seen some of these horses that are shown. He has healed up several horses that the Vets had said needed to be put down. We know one like that went back to being a top team roping horse. https://www.underwoodhorsemedicine.com/testimonials/