You can use Permethrin SFR, but it will NOT kill wasps on contact. The wasps/bees will die, but not immediately. It can take a few minutes for them to succumb to the product. Permethrin will help to deter them from nesting in areas it has been sprayed. Wasp Freeze is your best choice if you are looking to knock down wasps instantly.
Yes, Permethrin SFR 36.8% is labeled for use on livestock such as horses and cattle as well as other animals. We have listed the specifications for horses below but you can find more information on the product label.
For use on Horses to control: Horn flies, face flies, stable flies, house flies, horse flies, black flies, eye gnats, mange mites, scabies mites, ticks, lice and fleas: Use ¼ fl. oz. to 1 pt. water, 0.6257% AI. Low pressure spray. Application: 1-2 fl. oz. spray per animal. Spot treat back, face, legs tail and ears.