



💧 Spray smarter, not harder—unlock next-level weed control!
Southern Ag Surfactant is a powerful 80% non-ionic wetting agent designed to boost the effectiveness of herbicides by improving spray coverage and penetration. Compatible with most herbicides including Trimec and 2,4-D Amine, it reduces water surface tension to ensure uniform application. Ideal for challenging hydrophobic soils, it saves water and enhances weed killer absorption, making it a top-rated choice among lawn care professionals and enthusiasts alike.

| Best Sellers Rank | #9,367 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #72 in Weed Killers |
| Customer Reviews | 4.7 out of 5 stars 2,725 Reviews |
S**Z
Great product - great price
This surfactant is a must have when spraying for weeds. It bonds to the weed to absorb the weed killer more effectively. It's not expensive and this brand is my go-to every time. Do yourself a favor and don't spray weeds without it.
J**G
Great for hydrophobic soild
The “soil” where I live is basically decomposed sandstone and clay which is very hydrophobic. Even watering with a light mist results in runoff without any real penetration. I applied this with a hose-end sprayer and it worked like a miracle. Getting deep water penetration and no runoff. Plants are loving it. Cut my watering time in half and tripled the effectiveness. Highly recommend.
M**N
Good, use a lot
Recommended. The label says 1-2 teaspoons per gal for general selective herbicides. I find you need closer to 1-1.5 tablespoons (3-4 teaspoons) / gallon. Why use this? Herbicides act faster - 3-5 days instead of a week+ More dead weeds at the same dose Less resprays Less effect on grass (weed vs. grass leaf surface area) 1tbspn/gal means 256 gallons of spray can be made Surfactants are much cheaper than herbicides This surfactant is low foaming, thus I believe it is of high quality. Dont waste time with the 16oz / pint. You’ll use it in a season. A gallon will last far too long. Tip1: Also, I’ve had good luck using this with Methylated Seed Oil (MSO). MSO is definitely not required though it helped with very mature weeds. Tip2: For general weeds don’t use plain 2-4D like I did. Get a mixture. Add either: quinchlorac, dicamba, tricylopr, sedge hammer, etc. 2-4D is amazing for dandelions, but most people have a lot of weed varieties: clover, creeping charlie, wild violet, spurge, etc. The mixture will save your sanity and resprays. Tip3: If it’s cold or the grass is not stressed you can mix a bit heavier than label. If it’s hot and sunny and you dont water 2x a day or 2x a week (depending on grass type) then mix at label rates or a bit less. Tip4: Look for the following chemical names Amine - summer spray (slower acting) Esters & acetic acid - spring & fall (faster acting but can burn grass more easily) Good luck. P.S. Donate to my lawn fund so I can actually mow grass not weeds. Hahah
B**E
Makes Herbicides More Effective
Using this product, which is an oil, makes your herbicides more effective because the oil makes herbicide cling to what you have sprayed, thus saving money and time. It also reduces the likelihood that you will need to respray. On the downside, using a surfactant makes it more likely that your sprayer tip will become clogged. If nothing is coming out of the wand and the cannister is pressurized you may have a clog. The surfactant can become a little gummy and/or bond with debris in the sprayer. Another symptom might be product coming out at an odd angle or not in a symmetrical pattern.
T**.
Worked great for me! Saved me time, money and sweat.
People say not to spray glyphosate using a Chapin 362 hose end sprayer. I mixed the glyphosate concentrate with this surfactant and a little marking dye, and sprayed and killed my entire front lawn. I should have used a setting of 7 to make up for the thick viscosity of the glyphosate concentrate and the thickness of this surfactant, but I got in a hurry and left it on the previous setting of 4, so I was actually spraying about 57% of the strength I was going to apply, which was <2% glyphosate. Well, I blame this surfactant for saving my butt because at the applicate rate I was actually using, without this surfactant, I do not believe I would have achieved the full kill of my lawn that I wanted. So not only did it allow me to use less glyphosate on my lawn for the desired effect, it saved me money and time and sweat from not having to go back and reapply 1-2 weeks later. I think a good marking dye is almost as important as a good surfactant. If you miss a strip, you can see it immediately versus waiting 1-2 weeks for everything to die around that spot you missed, then having to retreat and wait another 1-2 weeks to get the results you should have gotten the first time after spot treating areas you missed. Marking dye goes a long ways and is well worth the money.
E**H
Great for DIY Lawn Care
A good surfactant is greatly needed if you are spraying weed killer on your lawn. I use a homemade 25 gallon sprayer attached to my zero turn to apply Trimec weed killer to one acre of lawn. The surfactant is used to make sure that the weed killer will stick to the weeds and do it's job. I used 5 oz of this surfactant in 20 to 25 gallons of water, weedkiller, surfactant mix to apply to 10,000 sqft of lawn. Because of the size of my applications, I now purchase the 1 gallon size.
T**C
yard chemical enhancer
works very well for spraying
A**R
Quality
Good product
Trustpilot
2 weeks ago
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