McChooky
Free Ranging
I used Ivermectin to treat a flock of 5 ( scaly mites) I used PSP and permethrin as well but they weren't as effective as ivermectin.They've only recently started molting and are finally growing any broken feathers back. https://www.merckvetmanual.com/poultry/ectoparasites/mites-of-poultry