Tried just about everything, lemon, vinegar, bicarb then voila - HARPIC toilet cleaner! Squirt at top of shower screen , maybe put a bit in the middle of screen too, scrub with back of scrubby sponge or similar, leave about 10 mins. Shower off (the Harpic not you!!) job done! Maybe not as environmentally flmkkk - sorry cat just stepped on keyboard - friendly as we all would like but by jings it gets the job done! Then smear on a film of baby oil or similar (again, shower glass not you!) which stops the build up. P.S. Got this tip from a Google website. S
