Havegard’s Refillable Thistle Sack is a pre-filled Thistle Feeder that can be refilled again and again. Finches love to cling to the cloth mesh and pick seeds out of the pouch. Simply hang the refillable thistle pouch in your yard or on the balcony, and enjoy watching the Finches on this remarkable feeder. Refill with Niger Thistle again and again.