Final answer:
To determine if a product contains peanuts, check the ingredient list, look for allergen warnings, and contact the manufacturer if needed.
Step-by-step explanation:
To determine if a product contains peanuts, it is important to check the ingredient list on the packaging. Look for keywords such as 'peanuts', 'peanut oil', or 'peanut extract'. It is also helpful to look for any allergen warnings on the packaging, which will indicate if the product may contain peanuts or may have been processed in a facility that handles peanuts. Additionally, you can contact the manufacturer directly to inquire about the presence of peanuts in their product.