The original Y-TEX insecticide ear tag, is a pyrethroid tag containing 10% Permethrin. It has had countless applications and works well in areas with pyrethroid susceptible horn fly populations. Also controls Gulf Coast ticks, face flies and spinose ear ticks. In addition, it aids in control of stable flies, house flies, and lice. This 9.5 gm tag can be used on all cattle of any age including lactating dairy cattle. Rotate to WARRIOR or OPTIMIZER to manage insecticide resistance.