how to clean bathroom marbles?

Answer 1

Vinagar and water

Answer 2

The average person can tolerate a growing collection of dust balls under the bed or a drawer full of tarnished flatware in the sideboard. But a grimy bathroom is another story. The bathroom should be cleaned once a week, and even more frequently if it gets heavy use from a large family.
Fortunately, most bathrooms are made of materials that are easy to keep clean. Tile and porcelain surfaces are stain-resistant if dirt and scum are not allowed to build up on them. Make it a firm rule in your home to rinse out the tub or shower stall immediately after you use it. Spray water from the shower head on all interior surfaces, then lather soap onto a damp sponge, swish it around the tub or stall, and rinse.

Answer 3

with Harpick. Paste Harpick on the tiles within 15-20 min. After that was it with water. Stains have removed & tiles shines. If u found some another good idea, pls mail to me at [e-mail]