The anodized aluminum surface can be wiped clean easily. We recommend cleaning the cooler’s internal storage with a damp cloth after use. Then simply wait for the inner storage surfaces to air dry before closing the lid. This will ensure it is fresh, clean and ready to go when your next adventure comes around. For larger spills or food leftovers, use a paper towel to first soak up excess spills and then warm soapy water to wash and wipe off any residue.