Can anyone give me some insite on poultry lice. I am trying to deduce if my chickens have lice or mites or something else all together. One hen had crusty eyes so we isolated her and put her on teramyacin and drops for her eyes. The crusties went away but she is still keeping her eyes closed. Yesterday I noticed a small bug (itty bitty little whitish thing) crawling across her eyelid. It dawned on me that the bugs might be irriatating her eyes and getting in her nose causing her to sneeze. I purchased a poultry mite concentrate in spray form today and sprayed everything and everyone. Is dusting powder better to use (at least inside the coop)? I have searched the website for pictures of poultry lice to try to compare but haven't been so lucky.