The Songbird Essentials Twirl - A - Squirrel Electronic Bird Feeder Baffle (SEBQTAS1) provides an effective way to get rid of naughty squirrels from stealing your bird treats. The motor automatically activates and twirls when a squirrel jumps over the feeder. It will not harm the squirrel for it spins just like a carousel and twirls the animal safely to the ground. The electronic baffle operates using a 3 size D batteries. It is perfect for all hanging feeders that weighs for up to 10 pounds. Product is made of PVC that is resistant to weather for long lasting efficiency.