Suet cake contains rendered beef, millet, corn, and more. Use in standard suet basket feeder. Attracts nuthatches, woodpeckers, titmice, and chickadees. Can be used year round. This product is ideal for providing necessary fat and energy for birds during winter, migration, and nesting seasons. Refrigeration is recommended before removing the packaging for cleaner handling. It uses a melt-resistant formula for easy, less-mess feeding in all climates.