How does Hawk Stopper work? When you call someone eagle eye, it's because they have sharp eyesight. But in reality, no human's eyesight comes even close to the visual capabilities of predatory raptors like hawks, eagles and falcons. These birds see about 8 times better than humans - they see things sharper and from a greater distance than anything we can imagine. To a hawk, the mesh netting looks 8 times bigger and 8 times stronger and can be seen from 8 times farther away! What we see as almost invisible looks to hawk like jail cell door! This concept was first used to protect salt-water salmon farms in the Gulf of Maine from predatory sea birds. Hawk Stopper now uses the same principles of visual deflection to protect free-range chickens, turkeys and ducks as well as koi, catfish and other inland pond or farm-raised fish. At less than 7 cents a square foot, there is simply no better protection available!