I'm going to try this and spray it all over the coop and bedding. I have ant problems and DE isn't cutting it. People say you can spray it directly on your birds but I'm hesitant to spray anything directly on animals.
It appears to be the same or pretty close to what folks use on their coops and chickens for mite/lice.
The horse stuff: 0.5% permethrin
Pen and Poultry permethrin spray: 0.5% permethrin