I Like a Clean House, But I Hate to Clean

I'd go with the bleach. Proprietory mould removers seem to be just bleach (calcium hypochlorite or similar) in a gel that helps them stick around long enough to work. It does need time to act.

A nail-brush is effective for scrubbing the grout.

I always wipe the bath surround and metalwork after a shower, and leave the room door open (and window, in warm weather), to help stave off mildew.

In my area, with hard water, wiping down also minimises layers of scale forming.

I have heard that this works: Mix hydrogen peroxide with white flour to create a thick paste. Apply the paste to the grout and allow it to work overnight before rinsing well with cold water.
To prevent mould you need to ventilate the bathroom so that it is not always wet - run extractor fan for 20 minutes, leave door open, wipe down tiles after use, all will help.

Put peanut butter on tile d cat will lick it off

Some kind of explosive. 🤔

Off the grout it’s near impossible try scrubbing it with a brush and some cleaner will remove some just not all

Mix bleach and and vinegar and spray I only and let it sit for awhile. Works like a champ. I know people who have used it under their houses to remove large amounts of black mold from wooden beams so tile should be easy as hell

I forget the name of it but you can get a bottle in home bargains, ita mould remover in a black spray bottle. Spray it on the tiles leave for 30mins give the tougher stains a rub down and then rinse off. Worked wonders for me.

A chlorine based bleach works great. You can use it full strength but best to dilute it one part bleach 4 parts water. Just soraybitbon if you have an empty sprayer.

try Zep basin tub and tile cleaner. I buy it at home depot. their products are great and they may have one for mold

Try a upvc solvent cleaner it gets rid of most things

Just scrape off and put a fresh layer down

I'd mix half and half of bleach and water

A steady stream of 121 degree water