On June 11th, Merck Animal Health announced that the Pest Management Regulatory Agency approved the use of Boss® Pour-On (Permethrin 5.0% w/w) in sheep.
Press Release from Merck Animal Health
June 11, 2018
RE: BOSS® POUR-ON: UPDATED PRODUCT LABEL
Dear Veterinarians and Producers,
We are pleased to inform you that Pest Management Regulatory Agency (PMRA) has approved the use of Boss® Pour-On (Permethrin 5.0% w/w) in sheep.
The following is an excerpt from the label with respect to the use in sheep:
Sheep: For the control of sheep keds and lice on sheep. Apply 1.5 mL per 23 kg (50 lbs) body weight up to a maximum of 18 mL for one animal. Part the wool until the skin is visible. Pour onto the sheep’s skin along the back and down the face taking care to avoid the eyes and mouth. Repeat treatment after 2 weeks if pests continue to be a problem. Leave a two day interval between last application and slaughter.
DO NOT apply more than two applications per year.
One 900 mL bottle lasts for 50 treatments or more, depending on the weight of the animal treated.
One 3.785 L bottle lasts for 210 treatments or more, depending on the weight of the animal treated.
This registration was initiated to address an unmet need in the sheep industry. The Compendium of Veterinary Products has been updated; however, product actually labelled with the new species indication will not be available for a period of time.
For questions or additional information, please call Merck Animal Health customer service desk at
Janice Berg, DVM
Director, Veterinary Affairs Intervet Canada Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA, operating in Canada as Merck Animal Health.