Overview ULTRA BOSS® Pour-On Insecticide is used for beef, dairy and lactating cattle; sheep, goats and horses. Target species include lice, horn flies, face flies, horse flies, stable flies, mosquitos, black flies and ticks.

  • Low-volume dosage reduces time and labor
  • Effective horn fly control and controls face flies
  • Season-long lice control with one application (January through April)
  • Apply 3 mL per 100 lb. body weight, up to 30 mL maximum application limit.
  • Also approved for use in back rubbers
  • For cattle, horses, sheep and goats, repeat treatment as needed but not more than once every two weeks
  • For horses, do not saddle horse for 6 hours after application and refrain from washing down area of application
  • For optimum lice control, two treatments at 14-day intervals are recommended
  • Not effective against cattle grubs