Here are some pictures:
The first are of the access point for the plumbing for the second
floor (it's a 2 story complex) The wood has a lot of white and black
stuff all over it.
Then when the window was removed for the bathroom, we found similar
damage to the wood there.
Then we found it underneath the kitchen sink.
And when we pulled up the carpet we stuff under each of the rooms:
dining rear bedroom and front bedroom we found damage on the floors to