Total Pest Protection Starts with Ultra Boss.

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Total Pest Protection Starts with Ultra Boss.

Give your herd the protection they need.

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Protecting your livestock from pests isn’t just about comfort—it’s about keeping them healthy, stress-free, and productive. Merck Ultra Boss® is a powerful broad-spectrum insecticide that works fast to control lice, horn flies, and face flies, while also helping to reduce populations of horse flies, stable flies, mosquitoes, black flies, and ticks.

Its pour-on application makes it simple to use, delivering reliable coverage without added hassle. With fewer bites and less irritation, your animals can stay focused on growing and thriving through the season.

Southern States - Roxboro

Southern States - Oxford

Southern States - Philippi

Southern States - Reidsville

Southern States - Richmond KY

Southern States - Romney

Southern States - Waco

Southern States - Amelia

Southern States - Breck Agronomy Center

Hardinsburg, KY

Southern States - Campbell

Southern States - Burkeville

Southern States - Boyle

Southern States - Christiansburg

Christiansburg, VA

Southern States - Creedmoor

Southern States - Charles Town

Southern States - Elkins

Southern States - Dallas

Southern States - Goochland

Southern States - Gloucester

Southern States - Hendersonville

Hendersonville, NC

Southern States - Harrodsburg

Harrodsburg, KY

Southern States - Johnston

Southern States - Henry Energy & Agronomy Center

Southern States - Luray

Southern States - Mebane

Southern States - Moorefield

Southern States - Mooresville

Mooresville, NC

Southern States - Mount Airy

Southern States - Conover

Southern States - Calverton Service