We had an incompetent Rainsoft installer over at our house who apparently did not flush the flux out of the system properly. We ended up getting it in our kitchen sink and bathtubs. How can we make sure it's all gone from our pipes and what should would use to properly clean our sink and tubs? We'd prefer to avoid any harsh chemicals. The dunce also dropped his fluxing brush on our driveway with the gunk on out. It got stuck there and left some residue that's not coming out. Any suggestions? Thanks!
