Amazingly, last year they literally drove the flies out of our coops. This year, the flies are lighting on them!!
Don't know what the difference is. We are spraying the coops and runs about 3 times a week with pyrethrin barn spray and that has helped immensely.
Also, I bought some of these cans of fly spray and put them in Airwick household automatic air freshener dispensers. I put one in each coop and set them to spray every 18 minutes. WOW...what a difference.

Also, I bought some of these cans of fly spray and put them in Airwick household automatic air freshener dispensers. I put one in each coop and set them to spray every 18 minutes. WOW...what a difference.

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