Bayer Patriot™ Insecticide Cattle Ear TagPatriot Insecticide Cattle Ear Tags are for use with both beef and non lactating dairy cattle for the control of horn flies and other pests listed on the label. Flies are often an underestimated menace to cattle producers and can significantly impact the well being and economic value of the herd. Flies interrupt grazing and can reduce weight gain. In fact, horn flies can reduce yearlings' weights by up to 18%. Up to $68 head can be lost due to