Merck - Ultra Boss Pour On - qt

2771694
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  • Regular price $35.99
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Pour-on insecticide for beef, dairy, and lactating cattle; sheep, goats and horses. Low-volume dosage reduces time and labor. Target species: lice, horn flies, face flies, horse flies, stable flies, mosquitoes, black flies and ticks. Cattle: No preslaughter withdrawal. No milk discard. Apply 3 mL per 100 lb. body weight, up to the 30 mL maximum application limit. Also approved for use in backrubbers.

Active Ingredients

5% permethrin and 5% piperonyl butoxide

6 Case