I tried the less concentrated on the birds, but it didn't kill the fleas, so yes, I put the 0.5% on the birds.
Instant death to the fleas and in a day or two most fell off. Those that don't fall off come off easily with a fingernail.
Have before and after pictures if you're interested.
I thought long and hard before I did and I remembered seeing that one of the products @KikisGirls posted a picture of is 0.5% permethrin and it's labeled for use on poultry.

Have before and after pictures if you're interested.

I thought long and hard before I did and I remembered seeing that one of the products @KikisGirls posted a picture of is 0.5% permethrin and it's labeled for use on poultry.


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