I've never had that problem. My flies like the horses or the molasses in the grain. Doesn't even have to have molasses…the flies just seem to like certain pelleted foods. And they will hang out in the feed trough if you've fed your horse grain in them. The saliva from your horse after eating grain is an attractant for flies.

But as for hay…never had problems with it alone. Don't think I even have flies in the hay part of my barn. Just where the grain has been dropped on the ground…and I use straight alfalfa, alfalfa grass, grass, and wheat hay.

Filed under: alfalfa hay

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