The hen pictured in the front of this picture was walking with her tail feathers tucked under. So I picked her up and noticed she had a bad case of northern fowl mite infestation (per a book I bought) on her rear. It was actually quite disgusting the feathers were black and her skin looked irritated. So I dusted with some poultry dust on her alone. I have very little of the poultry dust left, but do have quite a bit of diatomaceous earth. My question is would the diatomaceous (long word) earth work for the northern fowl mites? Or is it in fact a mite problem as I presume? Thanks!