Tribune is a quick-acting professional herbicide that starts to desiccate plant tissue immediately upon contact. This non-selective herbicide causes plant photosynthesis to stop within minutes in most conditions. It is effective on a wide variety of emergent, submerged, and floating aquatic weeds including watermeal, duckweed, water milfoil, curly-leaf pondweed, and many other nuisance aquatic weeds.  It contains diquat as its active ingredient, which is easily absorbed by targeted weeds for a fast kill.  It is safe for surrounding soil and wildlife and can be applied in and around docks, ponds, swimming areas, lakes, drainage areas, and fountains.