Hello chicken folks! I've had an on-and-off-again issue with mites on my birds (doesn't seem too serious - am only seeing the little beasties near the vent area on my chickens - but I don't want it to get worse and I hate that my girls and boys have itchy things all over them). Anyway, I have diatomaceous earth and when I apply it, it seems to work a little at first, but then the mites come back. Is this because I'm not applying it often enough, or is it just not that effective? How often should it be applied if mites are present in order for it to work well? Is there another product I should be using that is more effective but safe for my chickens and the environment? I really don't want to resort to Sevin dust because I know it is horribly toxic - as effective as it is. Do any of you out there have any products you swear by? Thanks!