Api Bird Bath De-icer allows you to enjoy your backyard friends all year long! This product includes cord chew protector to ensure it can't be ruined by curious animals. Has a stainless-steel guard and auto shutoff for bird safety and to protect animals from the deicers heating element. Csa and Ul Listed making it a safe design for use and energy efficient. This de-icer is recommended for up to 15 gallons of water and is compatible with most bird baths (even plastic bird baths!). Includes one year warranty.