How do I clean grout?

[Kendodd]

My shower is disgusting and nothing I have done has worked.

Thick bleach and an old toothbrush.

Has always worked for me.

Smear it on with the toothbrush...little scrub....leave it for an hour or so then go back scrub again and rinse.

Domestos Grotbuster! (It is just very thick strong bleach with a little nozzle. Drizzle it along the grout, leave, scrub with toothbrush, showe off.)

I wanted my shower re-grouting but this stuff has made it gleam again.

Another thing to try is making a paste with baking soda and vinegar (I don't think it matters whether it's white or malt vinegar) and 'paint' it into the grout. Leave it for a while then scrub off. It's always worked for me

dettol mould and mildew remover - just spray on and leave it to work

Thank you, need to dig out an old toothbrush.