Kill Dust Mites by Eliminating High Moisture Levels
The number one allergen that people with asthma and allergies react to is dust mite droppings. Dust mites are microscopic parasites that live off of shed skin flakes. They live in bedding, carpets, and furniture. Dust Mite droppings are tiny and can be airborne where they can be breathed in and aggravate allergies and asthma. For excellent, easy to understand information, visit http://www.housedustmite.org/.
Dust mites do not drink water, but instead absorb water out of the air. Dust mites need over 60% Relative Humidity to live. While dust mites do not live in crawl spaces, they like crawl spaces. Why? It is difficult to keep a house dry when you have a dirt crawl space under it, and it's that life giving humidity that allows dust mites to thrive upstairs. Dry a crawl space out, and the air flowing up into the house will no longer be wet, the house will dry out. The dust mites, which are like tiny water balloons, dry out and die. That's great news for allergy and asthma sufferers.
Other pests love the moisture in the crawlspace too. Termites love wet wood. Spiders love crawl spaces because they eat other bugs, and there are usually plenty of them in a damp dirt crawl space. Mice and rats like dirt crawlspaces, and snakes, all kinds of pests. And when it's time to die, a dirt crawlspace is often a nice peaceful place to do that – and subsequently decompose.