A crawlspace is a very contained area underneath your home. In most cases, it lacks any ventilation that will keep air circulation flowing on a regular basis. As humidity swells in your crawl space the moisture has no where to go and eventually begin to rot wooden frames and supports. Mold can also become a problem over time creating bacteria and a perfect environment for pests, bugs, critters, and unwanted animals. Over time it can generate must and odor from the live mold that continues to grow and spread underneath your home- making the air quality your family breaths extremely hazardous.