1/3 oz. of pure essential oils in a neem oil base for an effective, pleasant and all-natural mosquito repellent. The glass vial has a roller for easy application. Recommended points of application include temples, wrists, backs of knees and ankles. Safe for children and easy to carry in purse, pocket, golf bag or tackle box! Truly effective for keeping away summertime back yard pests without the unwanted chemicals. We use it on our pets too!