Buzz away insect repellent is a family friendly formula, which repels mosquitoes that may be carrying the west nile virus. Directed use is to shake before using. For best results, apply to skin every 2-3 hours or more often as needed. For added protection, apply to clothing. For gnats, blackflies and no-see-ums, hourly application may be necessary for adequate coverage. This spray comes in a 6 fl. Oz. Bottle.