Hello! I have a flock of twenty (2 roosters, the rest are hens) with a nasty lice infestation. I believe it may have started back in fall, because I found wild birds flying in through the chicken door and into the hen house. I've been trying to treat them since, and I just can't seem to shake them! I tried dusting with Seven, which seemed to work okay but was a serious pain in the neck and not to mention toxic. I tried giving them a bath in dawn dish soap (in the fall), but the poor things got so cold that I had to bring the few I had bathed inside. I also tried the poultry protector spray, which I was not impressed with, and made little difference. Right now I seem to have them controlled to some degree. I put a bunch of ash in a dust bin for them, but they just scoff at it and go dig holes to bathe in instead. I have also been spraying them every day with a mixture of unfiltered apple cider vinegar and Dawn dish soap. This by far has been the most efficient and effective method. Unfortunately, now the areas I spray are clean,( back of the neck and vent.) but the lice have just moved to other areas of the bird! behind the earlobes, under the wattles ect. I'm especially concerned because of them being on the head, which I've heard is the most dangerous. I've cleaned out my coop, dusted with Seven and put in fresh litter, but it's been soiled since then. Everyone seems to be acting normal and healthy, and they are taking dust bathes frequently. So I guess my question is, what else should i do? Any advice or support is very much appreciated! PS: I am new to Backyard Chickens and this is my first post!