Wipe all spills up immediately to prevent unsightly stains.
Place trivets under hot cookware to protect the counter's surface. Use coasters under glasses to prevent rings from forming.
Use cutting boards when chopping or slicing to protect the counter from nicks and scratches. Use potholders or trivets under cookware and other items with rough or textured bottoms.
Clean the counters with a soft, non-abrasive cloth and special stone cleaner formulated to remove soil while preserving the protective seal. Remove dust as necessary by wiping the counter with a dry, non-abrasive cloth.
Remove stubborn stains with oxygen bleach, which will lift the discoloration without damaging the limestone.
Retreat with stone sealer as necessary. Contact the company you purchased the counters from for recommendations on the best type of sealer and how often it should be applied.