I'm reading a lot on byc and links amd google. I know to dust with sevin and tey and pull any nits out with coconut oil or oil of some sort.. but do I shampoo the infected chicken or flock? If so... what kind of shampoo and how do I shampoo a chicken??!? Also after dusting do I just leave the dust in there? Currently I did thw sevin dust amd cleaned coop dusted coop thoroughly and now they hens r back to roaming ..with powdered white bums lol.. so is that correct. Other then re dusting for hatched eggs 7-10days feom now? One had mild eggs around the vent and three hens I only saw adults no nits. I'm a step by step kinda gal.. any help ?? Thank you.