Snake-A-Way snake repellent works by temporarily disrupting a snake's sensory reception and causing disorientation, encouraging the snake to slither away in search of fresh air. The environmentally responsible, university-tested formula has a 91% effectiveness rate against both poisonous and non-poisonous snakes. This patented formula will not harm snakes, and the granules withstand normal rainfall to last 2-3 months. | Victor Pest Snake-A-Way Snake Repellent | Size 4 lb