How do I avoid contamination when using new aluminum foils?

To avoid contamination when using new aluminum foils, always handle them with clean hands or use utensils to prevent transferring bacteria or germs. Avoid reusing aluminum foil as it can tear and may harbor bacteria from previous uses. Store aluminum foil in a dry place away from direct sunlight to prevent degradation. Before using, inspect the foil for any tears or punctures that could allow contamination. Use a fresh piece of foil for each food item to minimize cross-contamination.