It is impossible to get rid of all mold and mold spores indoors. Some mold spores will be found floating through the air and in house dust. Controlling moisture is key The mold spores will not grow if moisture is not present. Indoor mold growth is controlled by controlling moisture indoors. If there is mold growth in your home, you must clean up the mold and fix the water problem. If you clean up the mold, but don’t fix the water problem the mold problem will come back.