This is a new formulation that has been on trial in the Far East and has been outstandingly successful. The Far East is a good place to trial as they have flies and biting insects all year round! It combines three new active ingredients, two of which are herbal extracts, which have demonstrated excellent repellent properties, as well as having no adverse allergic reactions. It has a higher price than our standard product, but a little goes a long way. We strongly recommend this product to you.