Hello, I'm an expert in the field of food science and preservation. When it comes to
M&M's, their shelf life can vary depending on a few factors such as storage conditions and the specific type of M&M's.
Unopened bags or boxes of M&M's can last for about 6 to 12 months on the shelf. However, once opened, it's best to consume them within 2 to 3 months to ensure they maintain their freshness and quality. Proper storage is key to extending their shelf life. They should be stored in a cool, dry place away from direct sunlight.
If you notice any changes in the texture, taste, or if they develop an off smell, it's a sign that they may have gone bad and should be discarded.
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