I used surfactants for years. I am not so sure there is a difference after a comparison test last year. Do surfactants really help or not? Stickers? Wetting agents? Useful before rain? Useful on waxy weeds? If surfactants improve the effects of herbicides, why are they not included in Trimec? Or in other brand products automatically? If you read the label--how do you tell if a surfactant is included? Does the T-Zone label mention surfactant? Just looked at the label. https://www.domyown.com/tzone-se-herbicide-p-17153.html It says essentially that surfactants or spray additives "can cause damage to the leaf tissue of the turfgrass" .