I was happy with it. Used it on my mature cow herd, replacement heifers and 175 5-weight feeder calves on grass. I did NOT use it on my bulls. I believe it's not approved for mature breeding bulls.
I had no pinkeye in anything which is a big problem around here. Flies were certainly minimized. Not sure of the huge weight gain that's advertised. I'd use it again..if cattle prices don't go completely to 'L'.
Make sure you use an automatic syringe because LongRange is moisture activated and you don't want to be constantly putting a needle into the bottle. Those are exact words from my veterinarian.