Silver is a really powerful antimicrobial. Yes, I did an article six months ago:

It's probably time for me to do another article! If you read that one, please be sure to follow the links to the other websites and learn more about it. If you have any questions, please ask, I'd be happy to help. I promote it largely as a ministry to save lives and health, and I don't want anyone to be without it simply because they can't afford one so I make loaner units available.