Berriz explains that the formula "uses Trimec, a selective herbicide that targets weeds but doesn't harm most lawn grasses." Trimec is a three-way mixture of 2,4-D, dicamba, and quinclorac.

Weed and feed products aren't one size fits all ... while the product labeled for bahiagrass's active ingredient is Trimec. It's important not to mix these up, as Atrazine kills bahiagrass.