Oxine acts differently depending on the concentration and whether or not it is activated. In its unactivated state, it is a deodorizer and bacteriostat, meaning only that it slows the growth of bacteria. When activated, it is fungicidal, bactericidal, virocidal, tuberculocidal and sporicidal, a very effective killer. It is not as strong as bleach, but it's longer lasting. This is why it is able to break down biofilms while bleach is not. It is a no rinse product that leaves a salt residue, and depending on the concentration can be added to water systems or applied directly to birds as a spray or vapor. There is so much misunderstanding and misinformation about it because of all the differences in concentrations and its activated vs unactivated state. I've been researching it myself because I bought a gallon to use as a bootwash solution among other things. (eta: it remains stable for a week after mixing if kept covered and out of sunlight)
One of the best references I've found so far is a pdf document showing approval from the EPA for a label change in 2014. I randomly came across it in my searches. It has a lot of detailed useful information. The pdf can be found by searching for: 009804-00001-20140113.pdf
I'm by no means an expert on it and haven't even used it yet because I'm still learning, but I'd love to be part of the discussion.