https://youtu.be/dFSf_3RQjOc Insecticidal ear tags can help protect cattle producer’s profits In this video, Kansas State University veterinary entomologist Cassandra Olds explains the importance of insecticidal ear tags for fly control in cattle herds. She notes two common pests for cattle: horn flies and face flies. Insecticidal ear tags, she explains, work by releasing a small amount of insecticide on the cow’s hair as the animal moves. Then, the natural oils in the hair…