It’s no secret horn flies cut cattle performance. Each fly pierces its host 20 to 30 times a day drawing blood each time. Insecticide ear tags and pour-on products are easy to use and cost-effective. It is important to monitor for resistance because it can cause entire classes of insecticides to become useless. The practical tips will help producers monitor fly populations and use the right products.
Source: University of Florida Extension, June 26, 2020. Link. While there are a considerable number of products available, it is important to notice that there are only three modes of action available. Remember, if resistance is developed all the products using that same mode of action are rendered ineffective . . . regardless of how the product is delivered (ear tag, pour-on etc.)
INSIGHTS: The graphic to estimate fly numbers is helpful and easy to share as is the chart arranging fly control products by mode of action. This piece is a solid reminder of resistance management practices that are applicable anywhere.