For TFM, all the guy wrote was the word ‘special.’”TFM’s results have, in fact, been special.
“We treat a water column in a stream and you're talking about a few feet deep, so you can get a concentration of it,” Gaden says.
“If you're talking about, like, the St. Marys River, which is very deep and very wide?
There's probably not enough TFM in the world to do that.” (See a graphic of how the Great Lakes' food web is disrupted.)
The current program has maintained the same tactics, along with strategic use of dams and weirs that limited the lampreys’ spread.

How scientists claimed victory over an invasive Great Lakes bloodsucker