Hiya, and welcome to BYC! 
Most folks I know use Permethrin powder. That diatomaceous earth is pretty useless once there's an outbreak, as it would take weeks to kill them. I use it as a prevention, but would get Permethrin powder if they ever had a breakout. I've heard people take an old sock, fill it with that powder, and pat their chickens down with it, especially their butt and under their wings. Repeat in 7-10 days.
We're glad you're here!

Most folks I know use Permethrin powder. That diatomaceous earth is pretty useless once there's an outbreak, as it would take weeks to kill them. I use it as a prevention, but would get Permethrin powder if they ever had a breakout. I've heard people take an old sock, fill it with that powder, and pat their chickens down with it, especially their butt and under their wings. Repeat in 7-10 days.
We're glad you're here!