Left a giant mess from drywall dust, as well as black sludge footprints in my (I have carpet in my place) and my downstairs neighbor's (he has all hardwood floors) apartments, the main stairwell and entryway (all carpeted), the steps to the basement, and finally black sludge water all over the basement floor, where we do laundry. None of the workers wore shoe coverings, and apparently Jason, the owner, expect his guys to take their shoes off, I guess so they could soak up the water with their socks. They were here to replace the old lead stacks in the plumbing with new PVC, they old replaced a part of it. They were supposed to do all 4 apartments in a 4-family flat, hopefully they will not be returning to do the other 2 apartments.
TL;DR Wouldn't recommend. See review from Jake Robinson also (my downstairs neighbor)