Stinger Fly & Insect Repellent is used for the relief of flying and biting insects. Effective for up to 7 Hours. Now 25% extra free! Keep the midges and flies away. NEW 1Ltr size supplied in an easy to hold spray bottle. *25% EXTRA FREE* This fly and insect repellent from Equine America helps to provide relief from flying and biting insects including midges. An application is effective for up to 7 hours depending on weather conditions Repeat applications may be safely administered to provide additional relief Stinger is invisible on application and is safe for your horse and the environment