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Post by dexterfarm on Sept 16, 2014 20:55:27 GMT -5
all 3 things I have used are permethrin based. I think the difference is the concentration. also we have had a lot of rain recently and i think that may have contributed to the short effective life of the ear tags. The group getting the spray i have been respraying after each rain. the group that had the pinkeye currently has the rubber with mixture of permethrin concentrate and diesel fuel and it seams to be the most effective.
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zephyrhillsusan
member
Caught Dexteritis in Dec. 2009. Member of this forum since Oct. 2013.
Posts: 1,502
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Post by zephyrhillsusan on Sept 16, 2014 21:16:37 GMT -5
We are using the Python Magnum tags for the first time. I, too, noticed diminished effectiveness after a few weeks. I called the manufacturer and talked to a representative. He says it is probably the weather, as we have had frequent bursts of rain. He said a gentle rain won't affect it, but downpours do. The tags work by the animal rubbing the insecticide on itself, it then works its way all over the animal. This takes several days to get good coverage. When you have cloudbursts every few days, it washes off and will take several days to build back up again. I did notice that when we have periods of dryer weather, the tags seem to be doing better. I'm doing what the Python rep suggested, supplementing with fly spray as needed. We're also using fly predators and a mineral with fly control. The flies are definitely fewer than they were early in the season. I got a late start on the tags, mineral and predators this year, but I have the predators scheduled to start arriving in March next year. Barb, your drought seems to have one advantage--one you'd gladly trade off, I'm sure!
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Post by legendrockranch on Sept 16, 2014 22:24:32 GMT -5
Barb, your drought seems to have one advantage--one you'd gladly trade off, I'm sure! You are right on that one Susan, who would have thought! Lesson learned. Barb
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Post by carragheendexters on Sept 17, 2014 9:21:01 GMT -5
Mike, have you thought about using a pour-on insecticide. We use one that was called Arrest but has been renamed Easydose. It is deltamethrin in a pour-on carrier. It is quite weather proof and we find we get 2 weeks coverage with it. We use it for flies and also we use it to repel mosquitoes and midges to lower the risk of 3 day sickness and Akabane virus. I am sure you would have a similar product over there. We just make sure we put a line from behind the ears right to the base of the tail for maximum affect.
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zephyrhillsusan
member
Caught Dexteritis in Dec. 2009. Member of this forum since Oct. 2013.
Posts: 1,502
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Post by zephyrhillsusan on Sept 17, 2014 16:03:13 GMT -5
I forgot until you said that, Louise, our vet gave me Cylence for that very purpose. I haven't checked it for dairy purposes, though.
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Post by legendrockranch on Sept 17, 2014 18:27:04 GMT -5
CyLence is ok to use on dairy cattle including lactating cattle. It is also ok to use on cattle of "all ages and sizes" active ingredient is Cyfluthrin. Occasionally we have used CyLence on smaller calves if they are really bothered by flies but that's the extent of what we use it for. For the most part it just takes up room in our frig Barb
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