What gets those lines off on the back of the toilet bowl?

You know those lines you get on your toilet bowl even though you clean in regularly, in which those lines are probably from water minerals? Any tips?! I've tried KaBam! (lime & scale remover), bleach, and even a Mr. Clean Magic Eraser. Thanks!!

Answers:
Pumice stone. wet it first(the pumice stone) and gently scrub a section first to ensure it doesn't scratch. My local wal mart carries it in the shape of a bar. Will also work to remove rings around sink drains. use very carefully so it does not scratch the drain. For use on porcelain will scratch plastic. Follow directions first.

Other answers:
gross, now way would i use my hands tto scrub my toilet!

i put dry dishwasher detergent in a bowl and slowly pour vinegar over it (because it foams)
then pour it in and let it soak!
gross, now way would i use my hands tto scrub my toilet!

i put dry dishwasher detergent in a bowl and slowly pour vinegar over it (because it foams)
then pour it in and let it soak!
You are not going to like this but it works. Put gloves on and use a green scrubber pad and some soft scrub. I forund that was the only way I could get rid of the lines.
  • Does anybody now how much Merry Maids cost? Just a general price?
  • how can i changethe right connection of my dryer from 3-way plug into 4 way plug?
  • Which one is better and why?
  • What is the best way to clean cast iron?
  • how can i remove a paint spot of clothes??
  • White Leather?
  • How do I get mud stains out of cotton Capri pants?
  • new vacuum cleaner?
  • How do I identify "genuine" silverware?
  • How do you draw from your pant to not fade within the rinse?