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.
You will need to use 1 2/3 fl. oz of Permethrin SFR for each gallon of water for indoor or outdoor spraying. If you only need to mix one quart of solution at a time you will need to use just under 1/2 (0.43) oz of Permethrin SFR per quart of water. The safety of the product indoors applies to the same rules outdoors, keep pets out of the treatment areas during application and until its had time to completely dry. Be sure to follow all label instructions for where it can be sprayed indoors.