ok sorry if this post is long :-(. I have done a tone of reading lately trying to find the easiest solution and information for these issues, but I get sooo much conflicting information its hard to know what to do. SO I am looking for practical help from those that have had experience with these things, and taking into consideration my flock and set up. My flock of 17 started looking mangy, and not super healthy, they are 18mo or so and some are molting, but was told to look for lice and mites. I examined my flock and found that 2-3 of them had poultry lice, I can see the eggs on the feather shaft and the lice scrambling around not super infested just below their vent. I have learned and read that poultry lice live out their life cycle on the host, not the same as human lice which is super contagious and gets everyone infested. SO do I only treat the hens who actually have the lice assuming it is not spreading to the others since I am not seeing signs on all the hens? Other than it being gross what are the risks or issues with the hens having lice? Also I have heard that the lice will die off the host so the whole coop strip and treat isn't as big of a deal as it would be with mites. Mites- I have tried to check for mites but to my understanding they are microscopic and really hard to get rid of.....I have checked all my hens and aside from the lice ones I do not see any scabbing or anything their skin and feathers look healthy, and I assume with mites I would see signs of irritation? Now I do have a Roo who has scaly leg mites, again I have learned that these mites live out their life only on the leg of their host, so again is this something I need to treat the whole flock for or just the roo who has it? AND then there is the whole slew of treatments I don't even know where to start. As far as treatment goes, I have Permethrin that I plan to spray on the birds, but the instructions are fairly vague just says spray the poultry coop, roost etc. Are these bugs going to be a constant battle? This is my first flock of my own. I grew up having hens but was a kid and didn't pay the attention to them that I do my own flock i see daily . Thanks for the help and reading my log post!