This Is How Often You Should Clean Your Ice Cube Trays - Tasting Table
Briefly

Ice cube trays, especially those made from plastic or silicone, can absorb food odors from the freezer, which can then transfer to ice cubes. This not only affects the taste and smell of your beverages but can also lead to bacterial growth if the trays are not cleaned regularly. To maintain hygiene, it's recommended to clean trays monthly when used for water, and after every use for other liquids. Proper cleaning involves rinsing with warm soapy water and allowing them to air dry to prevent contamination.
If ice cube trays are made from plastic or silicone, they will absorb food odors which then seep into the ice cubes themselves, resulting in strange smells.
Not only can uncleaned trays add unwanted smells, but they can also become a cesspool of bacteria. Regular cleaning is essential.
To clean ice cube trays, rinse with warm water and soap, scrub thoroughly, and ensure to wash hands before refilling with water.
For lingering odors, consider placing the trays in the oven at a low temperature to help eliminate smells effectively.
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