According to a document on the town's website addressing submitted questions regarding triclopyr, the herbicide will not be harmful to humans.
"Triclopyr is not considered to be a cause of cancer, birth defects, or genetic mutations. Nor is it considered likely to cause systemic, reproductive, or developmental effects in mammals at or near concentrations encountered during normal human use," the document states. "However, Washington State Department of Health considers it prudent public health advice to minimize exposure to pesticides regardless of their known toxicity."
The town of Cazenovia's Draft Environmental Impact Statement lists several alternatives to herbicide and their reasons for not using them.
If no action is taken, Eurasian watermilfoil will continue to dominate aquatic plantlife and recreational use will become increasingly impaired. This would damage the economy of the town as lake front properties lose value.
This solution provides a temporary reduction, but can actually spread the species as fragments become new plants in new areas of the lake.
While a sterile form of grass carp can be used to eat aquatic vegetation, this plant-eating fish prefers other native plants to Eurasian watermilfoil. This could result in a reduction in all plants in the lake, not just invasive species.
This method, while practical for small areas, is slow, labor-intensive and prohibitively expensive for use in the entire lake. This option is still a valid possibility for lakefront property owners.
These barriers prevent light from reaching the sediment surface and crush vegetation underneath, preventing and stopping the growth of plant life. This is another method that individual homeowners might employ.