Ultra Boss Pour-On : qt Product Type_Freeze Branding *Do not use in calves

*Do not use in calves to be processed for veal*

Applied at the recommended dose volume of 1 mL/10 kg (22 lb) body weight

Available in multiple colors

Safer For the Environment

Handle color may vary

Ultra Boss Pour-On : qt Product Type_Freeze Branding *Do not use in calvesUltra Boss from Merck Animal health contains 5% permethrin and 5% piperonyl butoxide for optimum pest control. Piperonyl butoxide improves the effectiveness of pyrethroids for a broad range of insects and decreases the amount of permethrin needed to achieve a desired killing effect. Controls lice, flies and more in lactating and non lactating dairy cattle, beef cattle and calves. Features: Broad spectrum insecticide against lice, horn flies, and face