Originally Posted by stevemachine
Agreed with phish. Most plumbers have the sense to avoid chemicals. I don't know about you but I'm not too keen on losing an eye/burning my skin or snapping a cable, or burning a hole in the piping etc. That's the last thing I would suggest to anyone.
Oh and not all chemical cleaners are sulphuric acid there are also bio degradable one that work just as well
I maintain 50 toilets in a well know company and urinals are a problem
I use a chemical to release the scale in the pipe work and then a rigid cable drill to clear pipe work
Been doing it 20 years and works for me