The silicone lids used in our snack containers are dishwasher safe. They can also be hand washed. Avoid harsh chemicals like bleach. In case of food odors, wash the lids with a paste made from baking soda and water. Simply mix a tablespoon of soda with a little water into a thick paste. Coat the problem area and leave for half an hour. Then rub with a damp cloth, rinse and dry.