Zonastat-H, an ovary-killing pesticide also known as PZP and the Montana Solution, is on page 31 of the February 15 report.
It’s a key ingredient of nonmotorized removal, which the advocates peddle as humane management.
For more information about RUPs, and the unlawful use thereof, go to this page.
RELATED: Test Your Knowledge of RUPs.
Western Horse Watchers Association 