Victor 4lb Snake Repelling Granules effectively repel garter snakes, rattlesnakes, and other species from areas they are not wanted. This granular snake repellent is applied around the perimeter of the area you want to protect. Snake-A-Way is detected by the snake's Jacobson’s Organ (auxiliary olfactory sense organ) and disrupts its sensory reception. This disorientation causes the snake to slither away, in search of fresh air. Wearing gloves, apply the granules to the perimeter of the area that is to be protected. Place bands 4-5 inches wide to repel garter snakes, 8-12 inches wide to repel rattlers. For yard application, sprinkle Snake-A-Way throughout the area within the perimeter. When odor becomes faint, simply reapply. This product contains naphthalene (7%) and sulfur (28%) as its active ingredients