When you have a herd of milking goats, or any farm animals for that matter, flies are inevitable. We regularly clean the stalls and remove the organic matter, but we still have flies.
Because we don’t wish to use any chemical insecticides, something new we are trying this year is Fly Predators* – small, fly-eating wasps with no stinger, that feed on the fly at the pupal stage. They get shipped to us in a bag:
I spread 15,000 around our goat barn a few days ago:
The baby goats were very interested in helping:
We will see how well they’ve worked in a couple months!
*Amazon affiliate link