I have six chickens and they are in a nice chicken house and it is clean. I also have clean bedding for them. My chickens have a problem with itching. I have dusted the place with Pyrethreum (garden and poultry dust) but they still itch and bite themselves. They have lost their feathers underneath and have stopped laying eggs.
What can I do...or am I doing something wrong? Any help would be greatly appreciated!