O r apple cider vinegar with mother ...that does the same thing naturally
What is Oxine ? sounds like a chemical ..
I've read that it is not good to put OACV in the water every time.
As for Oxine. I don't think so. I try very hard not to add anything more non organic to my chickens than I have too. Doesn't make any sense to me to do so. I might as well buy store bought eggs and save the money. I'd rather wash waterers.