On the topic of mites and even other chicken parasites, since it's coming that time of year...
This may seem like overkill, but this is what I do when I find my bird/s has/have a bug... or many.
1) Bath in flea and tick shampoo for cats. I use Sergeant's Gold. Make sure to rinse with vinegar and water mix to remove all the soap (I use a quart per 10 gallons of water).
2) After the bird is mostly dry, I sprinkle them with Sevin.
3) I strip their bedding and spray all cracks and surfaces well with Permethrin (mix as label suggests).
4) I replace the bedding and sprinkle Poultry Dust in their bedding.
5) Just to make sure nothing lives, once the birds are totally dry, I apply Ivermectin pour-on (1/2mL for bantams and 1mL for large fowl).
I had a bad case of lice 2yrs ago and after 2x of cleaning the pens and powdering with Sevin they kept coming back. I went nuclear on them and haven't seen any bugs since!
Our current plan for dealing with this infestation:
- Tonight, we are going to pull the girls off the roost one by one and dust them thoroughly with Sevin/DE.
- Tommorrow, we will chase everyone out of the coop and the run.
- Bedding will be removed from the coop, and burned.
- Coop will be vacuumed as cleanly as possible.
- Windows and doors will be sealed.
- We will set off a Permethrin fogger in the coop.
- 2 Hours after the fogger is complete, we will vent the coop with fans for another hour.
- Fresh bedding and a generous helping of DE will be added to the coop.
- Every 5 days for the next 20, we will pull the girls off the roost and re-dust with sevin.
Does this sound reasonable?
I'm trying very hard not use any sort of additional chemical dust in the bedding, as my intent was to compost the bedding and droppings and use them in the garden. I'm comfortable with the small amount dusted on the girls for treatment, but I'm not as comfortable with adding treated beddings to my food beds.