When to retreat for lice

Sparklewina

In the Brooder
7 Years
May 8, 2012
79
3
43
Red Bluff, Ca
After careful management for three years with no problems, I suddenly have lice on my chickens. I first noticed bugs on some chicks, I dusted them with Y-Tex/Gardstar Poultry Dust which contains permethrin. Most of the chicks did not survive, the one who did is doing well and is bug free.

I decided to dose all of my adult birds with topical ivermectin which I had on hand to treat my pigs preventatively for parasites. It's Noromectin 1% for Cattle and Swine, there are no label instructions for treating chickens. I've read that other people use Ivermectin for chickens topically, but at a higher strength per dose (5% if I'm not mistaken). This 1% Ivermectin used topically did successfully treat one of my mom's hens with severe Scaly Leg mites so I believed it would work for this lice issue that has effected some of my adult birds. I dosed the adult birds I could grab 3 days ago. Not all of them have evidence of lice eggs, but the ones that do have not shown any change. I can still see eggs on their butts.

My question is: Should I retreat the adult birds I've already dosed with Ivermectin? If so, should I hit them with Iver again? Or Poultry Dust/Permethrin? Bathe them with flea shampoo? Leave them alone and check back after a certain period of time?

I have treated some of their dust bathing spots with unmedicated DE, but I really want to be thorough with knocking the lice out that are already on my birds. Mostly because it's just so gross!
 

Sparklewina

In the Brooder
7 Years
May 8, 2012
79
3
43
Red Bluff, Ca
Thank you!

Can anyone advise if treating with Ivermectin topically is safe if repeated every 7 days? I'll redust the coop with Poultry Dust at the 4 day mark (one of my hens just started brooding in there, the chickens don't sleep in there at night during the summer).
 

ChickensAreSweet

Heavenly Grains for Hens
9 Years
Jun 8, 2010
15,100
674
398
Pacific NW- where the Douglas Firs grow
Lice need to be retreated at 7 and 14 days.
http://extension.unh.edu/resources/files/Resource000790_Rep811.pdf

I have no idea on the ivermectin. Personally I would stick with dusting them with permethrin poultry dust.

The nits can be removed after the bugs are dead with unrefined coconut oil, I have read. It may take a week or so for them to come off or disappear after the oil application. Some people cut the feathers out but I personally would not, as you may encounter a blood feather.

Keep in mind that I have only dealt with mites, not lice, and here is another link:
http://edis.ifas.ufl.edu/ig140
 

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