A common misconception is that the only mold in a home is the mold you can see. The fact is that, if you can see mold, that spot is only the tip of the iceberg. Mold is a plant that loves to spread, grow and survive; it spreads through your entire house by releasing spores (seeds) into your air which are then moved around by your AC system, clinging on to anything that it can grow on. This is why the Dry-Fog process we use handles the entire house and not just the one visible spot.