 Well, that's a good time right after that downpour that goes for a half hour and maybe you get an inch of rain to really get outside and walk around that foundation. See if there's any puddles right on that foundation. You can also look up at your gutters and see if there's any tiny leaves, maple seeds, you know, things that are stuck on the outside of the gutter. And that's an indication to you that they've overflowed.