Do you treat your coop and/or birds as a prevention or only if you know they have lice, mites, fleas...whatever. I have not had to deal with this yet, so I have not looked far for info. I do have some hound dogs and cats that surely have some fleas. The other animals like to sleep in the coop/shed too and one dog house in the yard is for any animal that decides to use it. How do you know if your chicks have problems. Mine itch and scratch, but I have not seen any bugs on them. What would do? Thanks!