Permethrin dip or powder for my chickens?

[chickenchicken123]

What form of permethrin has a longer lasting residual killing effect for mites and lice on chickens. The powder permethrin where you dust onto your birds or the concentrate you dilute in water and dip them into?

I will have to be treating my animals more often as there are many wild birds. So I would want the permethrin to stay on them longer and kill the mites or lice. I’m not to sure if they have mites now, but a little while ago they kept getting mites on and off. So I just want their best solution to my problem. Thanks.

 

[Wyorp Rock]

Hard to say which form is longer lasting.
I prefer to dust the birds, but spray housing.

Put the dust into a sock, then tap it all over the bird like a powder puff, moving feathers around and working the dust down to the skin and through the feathers.

Clean out bedding, spray housing, including roosting bars and nesting boxes, making sure to get into nooks, crannies and crevices.

Repeat all of it - treating birds and housing in 5-7 days intervals to help break the life cycle.

If you have not been treating your birds and they have an infestation, then it will get worse as the weather gets warmer. Hopefully you can get on top of it soon.
Here's your other 2 threads.
https://www.backyardchickens.com/threads/should-i-use-ivermectin-cattle-pour-on-for-mites.1559406/
https://www.backyardchickens.com/threads/poultry-mite-treatment-that-actually-works.1559405/