Hi there
Just noticed that when we flush our toilet, it is no longer flushing all the way around the rim. So it's not as clean as it should be. Have stuck my hand around the rim (with gloves on!!) and there was some limescale there (we live in a hard water area). But not sure if viakal might upset some rubber seals in the plumbing which I don't even know about.
Before I go the expense of calling a plumber, does anyone have any advice on how to fix this? Many thanks