Just one on this occasion. Tbh I already have single 1st floor jobs where I use wfp, and so far I haven't had a problem. I also had to drop a customer a couple of years ago as she moved to the top floor where she now has a wfp'er but he doesn't do any others in the block. IMO at the end of the day neighbours have to live with the drips if they don't already employ a WC or better still employ me!