Pour on insecticide for cattle containing 1% lambdacyhalothrin with 5% piperonyl butoxide. For the control of horn flies in beef cattle and calves.

Active Ingredients

1% lambdacyhalothrin with 5% piperonyl butoxide

Features and Benefits

  • Ready to use pour-on.1
  • Contains 1% Lambdacyhalothrin insecticide synergized with 5% Piperonyl Butoxide (PBO).1
  • PBO is a synergist that enhances insecticidal activity.2
  • For the control of horn flies and lice in beef cattle.1
  • Provides rapid knockdown of flies and consistently provides exceptional reduction in fly pressure.1
  • From 99% to 87% reduction in fly pressure for eight weeks.1
  • Do not apply to lactating or dry dairy cows. Not for use on veal calves.1

Horn Flies Bleed Profits

  • Horn flies pierce cattle’s skin and suck blood up to 40 times per day.
  • The results bleed producers’ profits, with millions of dollars lost annually.

The combination of PBO and Lambdacyhalothrin means stronger, longer activity. Provides 90% control of horn flies for more than seven weeks with horn fly levels kept below the economic threshold for up to 15 weeks.


10 mL for cattle <600 pounds, applied down the midline of the back
15 mL for cattle ≥600 pounds, applied down the midline of the back

Special Note

ULTRA SABER Pour-On is not recommended for use on veal calves. ULTRA SABER Pour-On is not effective in controlling cattle grubs. Therefore, this product can be used on cattle at any time of the year without fear of host-parasite reactions commonly associated with grub treatment products. ULTRA SABER Pour-On should be used in an integrated pest management system, which may involve repeat treatments and the use of other pest control practices. Continual exposure of horn flies to a single class of insecticide, (eg, pyrethroids or organophosphates) may lead to the development of resistance to that class of insecticide. In order to reduce the possibility of horn flies developing resistance, it is important to rotate, on a seasonal basis, the class of insecticide used and/or the method of horn fly control. For advice concerning current control practices with relation to specific local conditions, consult resources in resistance management programs and your Cooperative Agricultural Extension Service.

For additional information, please see the product label.


  1. Data on file, Merck Animal Health.
  2. Chemical Watch Factsheet. Piperonyl Butoxide (PBO). Pesticides and You. Beyond Pesticides/National Coalition Against the Misuse of Pesticides. Vol. 20, No. 1, 2006. pp. 17-20.