You can’t poison their water holes per 18 USC 3 §47, a common practice before 1959.
Today, the advocates poison the mares with Zonastat-H, a restricted-use pesticide that tricks their immune systems into attacking their ovaries.
The ranchers are also involved, but they prefer GonaCon Equine.
Their methods may differ but their goal is the same: Ranching superiority in the lawful homes of wild horses.
RELATED: If You Want to Help the Ranchers Give Money to the Advocates.
Western Horse Watchers Association 