in nature it's accomplished by moving, mobbing and mowing these herds of herbivores, you know, the wildebeest of the serengeti, the cape buffalo in botswana, the american bison, was accomplished through moving, mowing and mobbing for predator protection and moving on, and so we don't have the predators here for the cows, so we use electric fence as our steering wheel, accelerator, and gas pedal on that four legged sauerkraut vat.