How hard are these to clean? How do you clean them?

Our Eco-Lock Rubber Tiles are very easy to clean and maintain. To clean any large dirt or debris, you can sweep them or use a vacuum without the brush attachment. For cleaning stuck on dirt and debris, we recommend mopping the flooring with a synthetic mop with a mild soap and water solution or using our Rubber Floor Cleaner and Degreaser. After the flooring has been mopped, all you would need to do is let the flooring air dry.