Originally Posted by qmqmqm
Thanks for the responses everyone.
I don't think the black smudge is mold... I can wipe it off with my hand...
That's what mold does...wipes off with the hand.
Look at it closely, it will have very small spots.
Also look in other areas of the basement.
I'm just trying to save you $$ in the long run, not cause a panic you will deal with down the road.