We rent a house, single story with no basement and the house is about 20 years old. I just discovered a small wet spot on the carpeting in the guest bedroom, not very big. Can't find a source for the wetness, but seems to be coming from under the carpet. Don't see any water anywhere else in the house or outside along the foundation.
Have soaked the spot up with a towel and about an hour later doesn't seem any worse. What might the problem be?