Bird-B-Gone 10 oz. Transparent Bird Repellent Gel is a non-toxic, sticky gel that keeps birds from landing and nesting. It creates a sticky surface that is uncomfortable for birds to stand on, causing them to move on. The gel is virtually invisible and easy to install with a caulking gun. Each 10 oz. tube covers approximately 10 linear feet. Due to the sticky substance of this product, it is not recommended for use on small birds.