How to Clean Granite Countertops: Safe Methods to Protect the Sealant

Granite countertops add elegance to any kitchen, but they require more careful cleaning than most surfaces. Because granite is porous, it relies on a protective sealant to resist stains and bacteria. Using the wrong cleaner — especially acidic ones like vinegar or lemon juice — breaks down this sealant over time. Here's how to clean granite correctly.

What to Avoid on Granite

• Vinegar, lemon juice, or citrus cleaners — the acid etches granite and degrades the sealant.
• Bleach or ammonia-based cleaners — strip the sealant and can discolor the stone.
• Abrasive scrubbers or steel wool — scratch the polished surface.
• Dish soap in large amounts — a small amount is fine, but heavy use leaves a film that dulls the surface over time.

What You'll Need

• Microfiber cloths
• pH-neutral dish soap
• Warm water
• Spray bottle
• Rubbing alcohol (for grease)
• Baking soda (for stains)

Daily Cleaning

1. Mix a few drops of pH-neutral dish soap with warm water in a spray bottle.
2. Spray the countertop and wipe with a microfiber cloth.
3. Rinse with a clean damp cloth to remove soap residue.
4. Dry immediately with a clean microfiber cloth — never let water pool on granite.

Removing Grease

For cooking grease and oil spills:

1. Dampen a microfiber cloth with rubbing alcohol (isopropyl alcohol).
2. Wipe the greasy area — alcohol cuts through grease without damaging the sealant.
3. Follow with a plain water wipe and dry.

Removing Stains

For oil-based stains (cooking oil, grease):

1. Apply a paste of baking soda and water to the stain.
2. Cover with plastic wrap and tape the edges.
3. Leave for 24 hours — the paste draws the oil out of the porous stone.
4. Remove the plastic, wipe away the paste, and rinse clean.

For water-based stains (coffee, wine, juice):

1. Make a paste with baking soda and hydrogen peroxide (3%).
2. Apply to the stain, cover with plastic wrap, and leave for 24 hours.
3. Wipe clean and rinse.

Disinfecting Granite Safely

To disinfect without damaging the sealant:

1. Mix equal parts water and 70% isopropyl alcohol in a spray bottle.
2. Spray the surface and let sit for 3-5 minutes.
3. Wipe clean with a microfiber cloth.

How to Test If Your Granite Needs Resealing

Drop a few drops of water on the surface. If the water beads up, the sealant is intact. If it absorbs into the stone within a few minutes, it's time to reseal. Most granite needs resealing once a year.

Frequently Asked Questions

Can I use vinegar to clean granite countertops?

No — vinegar is acidic and will etch the granite surface and degrade the sealant over time. Use pH-neutral dish soap and water instead.

What is the best cleaner for granite countertops?

A few drops of pH-neutral dish soap in warm water is the safest daily cleaner. For a dedicated product, look for granite-specific cleaners that are pH-neutral and sealant-safe.

How do I remove dried food from granite?

Dampen the area with warm water and let sit for a few minutes to soften. Then gently scrape with a plastic scraper and wipe clean with a microfiber cloth. Never use metal scrapers.

How often should I seal granite countertops?

Once a year for most granite. High-use areas may need sealing every 6 months. Use the water bead test to check when resealing is needed.