Posted 12/13/2015 15:02 (#4956924 - in reply to #4956746) Subject: RE: How to remove buildup inside cast iron bathub drain?
Friend used "Mainline drain cleaner" he bought at Lowes about once a year on his shower with a cast iron drain. Each cleaning lasted about a year and it was some vile stuff, dump it inand leave the room kinda stuff.
INDY