Weedtrine D is a broadspectrum liquid aquatic herbicide for use in and around still lakes, ponds, ditches, and noncrop areas. It contains diquat as an active ingredient, providing a contact control. Controls a broad range of aquatic plants including submerges, floating and emergent weeds as well as a filamentous algae. It can be used in noncrop or nonplanted areas such as around buildings, fence lines, driveways, patios, etc.