Snake Stopper Snake Repellent Granules by Bonide help to naturally deter snakes, iguanas and lizards from your yard and garden! Natural ingredients trigger escape and avoidance behavior in pests by producing a strong smell and taste that acts as an irritant to unwelcome animals without causing them any harm. When used as directed, this product is safe for use around people and pets. Snake Stopper arrives conveniently ready to spray so you can control pests right away. To use, simply spread the pellets in the affected areas you wish to treat.