Before revision: Scarecrow in a field Rat guards: steel or aluminum discs attached to the mooring line to prevent rats from boarding a ship Ultrasonic bird repeller Animal repellents are products designed to keep certain animals away from objects, areas, people, plants, or other animals.
After revision: Scarecrow in a field Rat guards: steel or aluminum discs attached to the mooring line to prevent rats from boarding a ship Ultrasonic bird repeller Animal repellents are any things or methods thatcertain keep certain animals away from objects, areas, people, plants, or other animals.