It's the mold you don't see that can be the biggest problem!

Mold loves to grow in dark, moist places. This is usually a basement, crawlspace, or attic. In this instance, mold was growing behind kitchen cabinets caused by a water loss.

The before and after of what putting a vapor barrier down looks like. There are many uses for installing a vapor barrier in your crawlspace, the biggest being mold prevention. A vapor barrier prevents moisture from accumulating in organic materials susceptible to mold growth.