The cocktail of aquatic herbicides proposed could contain multiple components, the exact breakdown is not clear. According to the Crystal Lake and Watershed website, Triclopyr and 2,4 D seem to be in the mix.
Triclopyr
JOURNAL OF PESTICIDE REFORM/ WINTER 2000 • VOL. 20, NO. 4
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2, 4 D
NRDC.org
March 15, 2016
2, 4 D, The Most Dangerous Pesticide You've Never Heard Of
Mother Earth News
What’s Wrong With 2,4-D Herbicide?
Chemistry lessons for farmers - made by a manufacturer, this promotion video gives a harrowing account of how 2,4-D kills by changing a plant's growth regulation, basically giving it cancer.