Yes, Agrisel Glufosinate 24.5 Weed and Grass Killer Post-Emergent Herbicide is labeled to kill horsetail. Please refer to page 12 of the product label for complete application instructions.
Whenever you see a state listed next to the "Not for Sale to:" section of our website, its listing any state that the product is either not registered in at all by the manufacturer, or restricted by that state either all together, or to only a licensed individual. In the case of the Agrisel Glufosinate 24.5 Weed & Grass Killer, the manufacturer does not have it registered for sale in that state. Agrisel is a small company and it is expensive to register products.