REVENGE® Ready to use Gallon Sized Horse and Stable Fly Spray with spray nozzle (batteries included). REVENGE® Horse & Stable Fly Spray protects livestock from flying insects. This water-based formula protects horses, beef & dairy cattle, goats, sheep, swine, poultry, and dogs. Can be sprayed directly on livestock when used as directed. Sold in lots of 3, priced individually.