Tried this industrial strength clog remover from rona, used 1/2 the bottle and it is clear now! I dunno for how long though.hdom wrote: ↑Oct 11th, 2017 3:18 amI had similar experience at my last house, snaking just below the sink with the trap removed was getting more and more frequent and finally it wouldn't do anything so I went to the basement and opened the drain pipe end cap and lo and behold, the whole pipe was filled with grease, decade of build up and once I snaked there, it cleared everything up... trust me, I am now much more careful about what goes down the drain...
Maybe next time it clogs I will open the drain cap in the basement. The drain cap is located 5 inches above the floor. Also there is not much to see how the drain lines are run. The pipes are located behind a finished drywall ceiling and wall.
We didn't do any renovations, and I don't know if the previous owner made any changes.