Vinegar and bicarbonate soda in hot water. A magical cleaner. I was super surprised by the results

Vinegar and water is great. If the grout lines need a scrub then use bicarbonate as well. You will need to actually scrub though.

1/2 cup white vinegar to 16 cups warm water – a fabulous, chemical-free cleaner!

I used to have white floor tiles and just used vinegar and water, they always looked good.

I have a scrubbing brush on a stick that I use for my tiles and grout – it’s hard work if you have large tiled areas. If the tiles are very bad/worn there are some places that clean it using a acid type solution but I heard it’s expensive. Steam mops are great too