Can Suet Go Bad? How long will the packaged bird suet or suet cakes last? Suet, a dense and hard fat with a high melting point, is primarily obtained from the joints and kidneys of hoofed livestock like cattle and sheep. Birding enthusiasts commonly utilize suet as a high-calorie food source for birds, particularly during … Continue reading How Long Does Packaged Bird Suet Last? Suet Feeding FAQs