Just don't look for 100% control. Been doing this for many years and have also been using the IGR for beef cattle since it was introduced. The more consistent the cattle are in their intake of IGR, the better the control. Doesn't take any extra labor as it is already in the mineral. I have read that if you can keep the fly population per cow below a couple of hundred per cow you are getting pretty good control, but ours rarely have an infestation that heavy. Fly tags are good for face flys but not very effective for others.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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