Type.....and effectiveness.....of control probably depends on number of head among other things; 10 head? 100? 1000? When I was in the business, I tried pretty much every thing on the market, back rubs, 'fly' blocks, sprays, pour-ons, tags, etc. The blocks only work if your cattle are 'isolated'; if your neighbor(s) have cattle across the fence, you'll get a continual re-infestation.......if he doesn't control his'n. For the last 20 years that I had cattle, I found the ear tags to be the most effective/least trouble; when I bought my last ones (tags), they didn't offer season-long control, so I had to plan on either replacing them or go to a back-up plan towards the end of the year. It's been my experience that nothing will work unless you work at it.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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