The new Spectracide One-Shot™ Weed & Grass Killer line is available in 32 fl oz and 40 fl oz concentrate sizes for larger areas, as well as a convenient ready-to-use 32 fl oz trigger sprayer and ...

They will not work on weeds already established in beds. Examples include Preen, Spectracide Weed Stop and Miracle-Gro Garden Weed Preventer.