(Merck) Dominator insecticide cattle ear tags are organophosphate tags containing 20% pirimiphos methyl. Dominator ear tags are approved for use on beef cattle, non-lactating dairy cattle and calves. Use 2 tags to control horn flies, including synthetic pyrethroid-resistant horn flies, for up to 5 months and as an aid in the control of face flies .Use the Allflex Universal Total Tagger to apply. 9.5 grams.
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