I am new to this site but am hoping someone can help me. My son in law sprayed our backyard with flea spray containing permethrin a few weeks ago. He did not remove our 2 chickens from the yard while the spray dried as the instructions suggested. One of the chickens has not been the same since. She lays in her nest constantly. I have been getting her out several times a day & she will eat & drink a little but goes right back to bed. Neither of them have layed an egg since the spraying. Was wondering if anyone else has had a similar experience they might share.