Southern Ag Surfactant for Herbicides Catalog Outdoor, Lawn & Garden Gardening Southern Ag Surfactant for Herbicides Manufacturer : Southern Ag Description • A wetting agent that increase coverage & penetration of any herbicide CONTAINS: 80% non-ionic Surfactant. USE: With almost all herbicide sprays including Trimec®, Atrazine, Brush Killer and 2, 4-D Amine. FOR: Reducing the surface tension of water to insure more uniform coverage and penetration of weed killers. RATE: 1 - 2 teaspoons per gallon of water (1 pint per 100 gallons). Rates Please contact us for current pricing and availability.