I also love coloidal silver for all open wounds, but I have never used the type shown above. It looks like it would be super convenient for a pressure sore, because it’s already in gel form, but if you have an option, get one in a higher silver count. That one is 24ppm, whereas the spray I got at the health food store is 250ppm. Not saying 24ppm won’t be enough for your concern, but when you do buy a silver product, that you will see a range of potency, price, and form… So see what works for you. It can do amazing stuff! I was sooo happy to have it when the whole left side of my face had a little (major) encounter with a frozen gravel driveway in 2018! No one could believe my skin came back so quickly. It was fantastic.