Everything I’ve seen so far seems to suggest that copper oxide is still anti-microbial, but I haven’t really attempted to research this, so take that for what it’s worth (which is little.) (I’ve actually become curious whether having it on my hands—which are visibly turning a bit blue-green where they rub against the copper—might have further antimicrobial benefits. But this is idle speculation I do not intend to do anything with.)
Everything I’ve seen so far seems to suggest that copper oxide is still anti-microbial, but I haven’t really attempted to research this, so take that for what it’s worth (which is little.) (I’ve actually become curious whether having it on my hands—which are visibly turning a bit blue-green where they rub against the copper—might have further antimicrobial benefits. But this is idle speculation I do not intend to do anything with.)