The Vanish Portable Pest Repeller uses sound to keep pests away. You can install it permanently, or just put it where you need it. The Vanish Portable Pest Repeller is built with a durable sturdy material that makes it water resistant, and one set of batteries can last up to one year!Brand Name: Vanish Power Source: Battery-Powered Product Type: Electronic Pest Repeller Pest Type: Outdoor Pests Indoor or Outdoor: Indoor and Outdoor Motion-Activated: No Weather Proof: Yes