Reptile Stopper 2.5lb Granule Shaker Jug Messinas Reptile Stopper can be used to discourage snakes, lizards and other reptiles from foraging, nesting and entry damage. To prevent further home and garden harm, apply Messinas Reptile Stopper to key areas. Our humane and safe Messinas Reptile Stopper creates a sensory barrier that works by smell, taste and feel and can be applied every 30 days regardless of weather or watering. It is pleasant to use, dries clear and odor free and is safe to use around fruits and vegetables.