Here is a llink http://www.sciencedaily.com/videos/2005/0910-killing_germs.htm to a video on the silver-based coating being used in hospitals - In Hospitals, Air Ducts with Silver-Based Coating Stay Germ-Free
Preventing hospital infections -- from such stubborn bugs as Staphylococcus aureus -- could get a little easier with a new non-toxic, silver-based material. In the interview/video is the statement : It's potent enough to kill germs, but is safe to use on virtually any surface. Trogolo says, "It's less toxic than table salt and less irritating than talcum powder. Ultimately we hope this will result in less infections and actually better outcomes for the patients." So if anyone tries to tell you using silver is dangerous, you have this hospital representative saying it is less toxic than table salt. They say: silver, a centuries-old germ killer. Rowena
