When you mix up a dose of Miracle-Mineral-Supplement you end up with chlorous acid that has a pH of around 3. Spraying acid on a wound can cause pain. It would be better if you adjust the pH of the mixture to about a pH of 5.5 or 6 before applying.
This type of disinfecting works great for infections, but it can also interfere with the enzymes that promote healing at the wound site. If you see an infection then use the disinfectant. Once healing gets going leave the wound alone.