My tile grouting has gone black at the bottom of my shower, how do I get it white again?

[DustyTV]

It's all at the bottom of my shower and also the white bit that seals the shower tray and glass has gone all black. I've tried scrubbing but it is just not getting rid of it.

bleach, the rubber stuff will probably have to be stripped off and replaced.

Thanks do I just scrub with bleach or leave it on to soak.
I'll get DH to sort the rubber bit at the weekend.

leave it to soak, put kitchen towel along it and pour it onto that. If it's higher up use a nail brush.

Milton fluid is pretty good for these issues in check, but if it's very black you probably need something more 'industrial strength' like a spay on mould/mildew remover

I use a spray on mold and mildew remover - it works very quickly bu5t you need to ventilate the room really well or you'll start seeing yellow elephants kissing.

Thanks, I've only just finished. Once I started I kinda kept going and I have deep cleaned th whole bathroom. I didn't realize how much it needed doing . I spray and wipe round everyday and do a big clean at the weekend but it still needed it!!