I used to work for at a kennel where they poured sevin dust all over, when I first asked if it was safe the women that owned the place poured it in her dogs food and said ya its safe they can even eat it, needless to say she was a moron and that ended up being one of those nightmarish jobs
It seems to me the word safe is interpretive. Anyone that thinks any poison is safe should do a little research on the rising rates of retardation in children. But anyway putting sevin dust or de on chickens makes me think of what I used to do for mites on roaches. Obviously you cant use poison on roach and they get mites just like birds, some roaches even have there own type of mites that live on them only and some people think that they might be beneficial. What we did with roaches that got bad mite infestations was roll them around in flour kinda like your gonna deepfry them or something
and it worked great, basically the flour acts as a desiccant and dries out the mites. Now I dont know if this would work on birds but I certainly wouldnt think it would hurt to try.

