War Paint Stick Fly Repellent is a highly concentrated insecticidal paste to kill and repel flies especially around the face, ears, legs and tender areas. Apply War Paint in very small amounts where flies congregate. When applied to the horse, it attaches to the hair and slowly releases the insecticide over a period of weeks. Full body fly control does not usually occur on the horse until 1 to 2 days after the application. It is not only an insecticide but a repellent as well. After 2 to 3 weeks War Paint will become powdery and fall off the horses hair with no adverse effects at all. Kills and repels face, horn, stable, black and bot flies. One treatment lasts for 7 days. Easy to apply and odor free.