Lice right?

[cmom]

I don't but I do spray inside the coops thoroughly, every crack and crevice, but that was for mites. I have put poultry dust and sprayed under the birds rain/shade tables. They like to get under them.

 

[cmom]

I have also used a lice comb and removed most off of the feathers but I still treated the birds.

 

[Chickstarrs]

I noticed you are in Canada. This has permethrin in it.
https://www.amazon.ca/PRO-PER-R-T-U-BED-BUG-SPRAY/dp/B0799QD2D5

I Googled the detailed instructions for this product and it specifically says not to use on pets but it seems similar to the stuff you use in the US to spray on the birds? I am afraid of hurting my birds more than the pests are.

 

[Chickstarrs]

I have also used a lice comb and removed most off of the feathers but I still treated the birds.

That must take a while with the number of birds you have! Do they sit still while you do that? I can't see mine allowing me to do that.