Gunslinger® AMP Pasture Herbicide

Simple, Selective and Season-Long!

Gunslinger® AMP Herbicide takes the toil and worry out of pasture weed control.  It eradicates die-hard pernicious and invasive broadleaf weeds like thistles, knapweeds, and nettles, allowing for more room to grow the nutritious forage your livestock needs to thrive.



Though not classified as a hazardous substance or mixture and the product has no grazing restrictions as such, applicators and end-users should know that waste produced from animals consuming grasses or hay treated with aminopyralid may retain enough active ingredients to harm sensitive broadleaf plants.  Applicators and end-users should carefully follow product labels regarding warnings or restrictions for manure or hay use.


This product is toxic to aquatic invertebrates and may be toxic to fish. Drift or runoff may adversely affect aquatic invertebrates and nontarget plants. Do not apply directly to water. Take care to minimize the incidental overspray along the shoreline when applying to terrestrial plants at the water’s edge or to water in areas where surface water is present. Do not apply directly to intertidal areas below the mean high water mark, except as permitted on this label. Drift and runoff may be hazardous to aquatic organisms in water adjacent to treated areas. Do not contaminate water when disposing of equipment washwater or rinsate.

This chemical has properties and characteristics associated with chemicals detected in groundwater. The use of this chemical in areas where soils are permeable, particularly where the water table is shallow, may result in groundwater contamination. Application around a cistern or well may result in contamination or drinking water or groundwater.


(2 x 2.5 gal) per case / 180 gals per pallet
(30 gal drum) /150 gals per pallet
(250 gal) / 1 tote


  • For the most current registration information, call (888) 255-4427.


It is a violation of Federal law to use this product in a manner inconsistent with its labeling.

Read all Directions for Use carefully before applying.

Do not apply this product in a way that will contact workers or other persons, either directly or through drift. Only protected handlers may be in the area during application. For any requirements specific to your State or Tribe, consult the agency responsible for pesticide regulation.


For additional information on this product please reference the Safety Data Sheet and Product Label listed below.

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