Clear blockage in sink, k45 cable Customer was experiencing a partial blockage affecting sink. Cleared blockage by taking pTrap off and running k45 cable. Brought back a lot of cast iron sludge, gunk/hair. Successfully cleared blockage. Tested for leaks. I During our visit, a mainline blockage reappeared in bathroom toilet affecting whole basement. We cleared mainline blockage on Oct28. Went ahead and pulled toilet and Recleared. Landlord is now on board for a camera inspection to investigate further and provide a long term solution.