Can I use old aluminum foil containers for baking cookies or cakes?

While aluminum foil containers can be used for baking cookies or cakes, it's important to ensure they are in good condition. Old or damaged foil can tear or leak, leading to uneven cooking or potential health risks. Always check for any signs of wear and replace if necessary. Additionally, avoid using foil containers that have been previously used for non-food purposes or have been exposed to chemicals, as this can contaminate your baked goods. For best results, use new or clean, unused foil containers specifically meant for baking.