It is not recommended to use a steam mop on a Mellow Mat. The heat and moisture from a steam mop can potentially damage the material and affect the integrity of the mat. Mellow Mats are typically made of foam or fabric, which may not be suitable for steam cleaning. To clean a Mellow Mat, it is best to follow the recommended cleaning instructions provided by the manufacturer. This usually involves spot cleaning with a mild detergent and water, or hand washing if necessary. Using a steam mop can void the warranty and potentially cause damage to the mat. It's always important to check the care instructions and guidelines specific to your Mellow Mat to ensure proper cleaning and maintenance.