The Federal Insecticide, Fungicide, and Rodenticide Act, 7 USC 136, provides for federal regulation of pesticide distribution, sale, and use, according to the overview by the EPA.
Although the advocates oppose the use of GonaCon Equine and promote the use of Zonastat-H (PZP), both are on the list of restricted-use pesticides.
They are not available for purchase or use by the general public.
Definitions of certified applicator and restricted use can be found in the statute.
The EPA registers pesticides according to their use on specific pests and under specific circumstances. For example, “Pesticide A,” registered for use on apples, may not be used legally on grapes, or an insecticide registered for “outdoor use” may not legally be used inside a building. In some circumstances, use of a registered pesticide may be restricted to pesticide applicators with special training.
RELATED: Using Pesticides in a Manner Inconsistent with Their Labeling.
Western Horse Watchers Association 