 Well, it's typically more humid in the summer, and you mentioned that it only happens when you're away, so you have less air movement inside the house, doors are not being opened and closed. Is this crawl space under your house, does it have a vapor barrier over it, Brian? Well, when the house was built 15 years ago, they put down some probably 4 or 6 mil sheeting, but it wasn't completely encapsulated, so...