AI: 37.3% Diquat Dibromide. Reward Landscape and Aquatic Herbicide provides no-wait control to a variety of aquatic weeds and is ideal for non-selective weed control in turf and landscapes as well as a trim and edge tool. It is a non-selective, highly active herbicide for control of floating, submerged and marginal aquatic weeds. Reward provides fast burn-down, works in cold weather and rainfast in as little as 30 minutes. The active ingredient, diquat dibromide, has been used successfully in sensitive aquatic areas for over 25 years.