Twirl-a-Squirrel Electronic bird feeder squirrel baffle. Amazingly effective and fun to watch. The squirrel"s weight on the feeder activates a motor which gently twirls the squirrel off. Can be used with all hanging feeders up to 10 pounds. Use feeders you already own. Does not harm birds or squirrels. Made from durable, weather resistant PVC. Easy to use and no assembly is required. No need to purchase "special batteries," Twirl-a-Squirrel operates on three standard "D" sized batteries (not included). Smart technology prevents motor fatigue.