How do you clean these tiles? Do they provide any air circulation so no mold builds up underneath them?

To clean our 8mm, Strong Rubber Tiles all you will need to do is sweep or vacuum any large dirt and debris and mop the tiles with a mild soap and water solution and let them air dry. Rubber is naturally resistant to mold and mildew growth, so unless there is some organic material under the tiles, no mold or mildew will grow.