A mold testing company will send one or two technicians who will take samples of the inside air in your home and swab surfaces in the areas of the water damage, as well as obtain control samples in areas where there was no water. These samples are sent to a lab to determine the amount and kind of spores in the air and surfaces. Unfortunately, there are all kinds of harmless mold spores floating in the air around us so that no one will have a zero spore count. However, an elevated mold spore count will mean you may need to file a mold claim. If there are elevated mold spores in your home, the mold testing company will develop a very specific plan to remove the mold from your home.