What type of cleaners should be used to clean sealed natural stone tiles?

• A. pH-neutral cleaners.
• B. Highly acidic cleaners.
• C. Abrasive solvents.
• D. None; just water.

Answer: (A)

Cleaning sealed natural stone tiles with a pH-neutral cleaner is best because it avoids chemical reactions that can damage the stone or the sealer. These cleaners lift dirt without etching or dulling the surface, which is important since many natural stones (like marble, limestone, and travertine) contain calcium carbonate that reacts to acids. Acidic cleaners can etch or dull the finish, while abrasive solvents can scratch the surface and wear away the seal over time. Water alone often isn’t enough to remove oils or deeper soiling. Using a pH-neutral cleaner provides safe, effective cleaning that preserves both the stone’s appearance and the protective seal.