I have 4 yearling heifers that I recently moved to a different farm. Almost imediately one of them got pinkeye. They have all had it now. 1 has fuuly recovered. Two are recovering and the other one now has it in both eyes. I am afraid she may have lost her site. I have been using a puffer dust, but I recently read that it sometimes causes more harm due to irritation. Just wondering what other people do to treat pinkeye?