Reward® Aquatic Herbicide

  • $139.99

Reward™ Aquatic Herbicide is used for aquatic weed control in ponds, lakes, reservoirs, marshes, drainage ditches, canals, streams, rivers, and other slow-moving bodies of water for control of aquatic weeds.

Reward is a broad spectrum non-selective, highly active kill on contact herbicide. Reward spreads quickly through the water and makes fast contact with aquatic weeds. Water-soluble, it is absorbed by target plants in just minutes, providing broad-spectrum control of floating, submerged and terrestrial weeds. 

Reward Aquatic Herbicide controls weeds by interfering with photosynthesis within green plant tissue. Plants should be actively growing for best results.

Reward contains 37.3% Diquat dibromide as an active ingredient.

Must provide a copy of your pesticide applicators license if you are purchasing this product in Michigan.

  • Fast Action
  • Highly active, non-selective
  • Broadest-spectrum aquatic herbicide available
  • Easy on the environment
  • Ideal for integrated plant management
  • Low use rates

Available in 1-gallon containers

Application Rate

1.5 gallons treat up to 1 Surface Acre, 4ft deep (higher rate for Submersed 
Weed control

Please see label for complete Application Rates on Product Label.


*Cannot be shipped to: AK, AZ, CA, CT, DC, HI, ME, NJ, NY, PR, RI, VT, WA

Product SDS Sheet & Label


Reward SDS Sheet                              Reward Label


Recommended Application Rate:

1.5 gallons treat up to 1 Surface Acre, 4ft deep (higher rate for Submersed Weed control)

Please see label for complete Application Rates on Product Label.

Customer Reviews

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Customer Reviews
4.0 Based on 4 Reviews
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Filter Reviews:
05/17/2021 Sharpe
United States

I used Reward in several spots, fortunately not my entire yard, as it killed the centipede where I spot treated it. I thought I'd used as instructed but if not, it's too sensitive and complicated for me. Reviews were so good I'll try it again under more controlled circumstances and let you know.

Darrell T.
United States United States
Product works. Packaging needs improvement.

When I opened the box, there was liquid leaking out from the lid. There was no seal, just the screw on lid. There was some brown poison on the side of the container. This product seems to be doing a great job on my small stock pond.

michael l.
United States United States
Reward aquatic herbicide

Reward aquatic herbicide works perfectly with the other chemicals that I mix up,and altogether they do exactly what they’re designed to do.

Joel H.
Fast and Effective!

I sprayed a combination of Propeller, Reward, and Cygnet on an out of control growth of duckweed and mat algae that was covering almost half of the surface area of my pond and quickly expanding. Within 1 day all these weeds had turned brown, and 3 days later, after dumping in some bacteria to eat up all the dead stuff, the pond was completely clear! I've never had an outbreak of duckweed and algae this bad, but this mixture took care of it fast! This will be my go-to spray from now on when ever these weeds pop up again.