Fly predators?

[Kimberliee]

So, who do you get your fly predators from? I have traps, I’m putting the chickens behind the cows and spraying the cows and horses until it’s under control. I have heard of Spaulding labs and Arbico. Any experiences?

 

[CluckerFamily]

My friend buys all her fly predator supplies at the local farm supply store.

 

[cmom]

I have never personally used them. I used permethrin.

 

[CynAlexa]

I have never personally used them. I used permethrin.
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How to you apply? To the coop, run, on the ground? I saw the product at a local store and found the instructions a bit overwhelming.