I just came off the range from checking cows and they are covered with flies. TCranch and Greybeard's cattle look great, I need to change up something because ear tags are worthless. Spray is a lot better, but not feasible to round them up every few weeks to spray. I think the heat and drought in our area isn't helping with flies either. I've attached a pic to give you a better idea on how our range is. Not much feed left and need to move soon. As mentioned above, I did notice my red cows had less flies than the black, but still way to many flies.