If you have terracotta pots that are covered in mold, there is a quick and easy way to clean them. All you need is some hot water, a scrub brush, and some soap. First, fill a pot with hot water and add enough soap to cover the surface of the pot. Swish the pot around to mix the soap and water. Then use the scrub brush to scrub the mold off of the pot. Finally, rinse the pot with cold water to cool it down and stop the mold from growing back. ..