New Construction Black Dust/Residue
Hey all, I've been going a bit crazy about this. I have a new home and a baby coming soon (very exciting!). Everything is going quite well with the new house, but I can not find an answer for this one problem.
There is some kind of black dust that seems to be sticking to plastic materials, most visible on white plastics (toilet seats, shower liners, shower curtain liner, inside fridge, etc.).
This is a new construction home, stick built, slab, in northeastern PA. Everything else in the house I am super happy with, I just don't understand where it could be coming from. We have multi split AC units and baseboard heat. I hosed the split filters and soon as it was warm enough, no dice.
Please if anyone has any idea that would be very helpful:) thank you in advance