Diquat SPC 2.5 gal herbicide provides non-selective control of aquatic weeds on contact. It spreads quickly through the water for broad-spectrum control of floating, submersed and marginal weeds. The product is foliar-applied and is slightly translocated through plant tissue. A surfactant enhances activity. It is completely inactivated on contact with soil. With Diquat SPC 2L herbicide, there are no concerns about groundwater, toxicity to fish, other organisms or wildlife.