Cleaning Granite Countertops With Hydrogen Peroxide

by Craig
(Cedar Park, TX)

QUESTION:

I recently read that many hospitals use Hydrogen Peroxide (H2O2) to clean surfaces, floors and counter tops instead of bleach or chlorine as it is very effective at killing germs and removing dirt without leaving a harsh or noxious odor.

As I researched further it turns out that H2O2 has been used in numerous ways beyond wound care, including as a mouthwash, hair dye and everyday cleaner. All that plus it is inexpensive.

I recently tested H2O2 on our Brazilian "Copper Canyon" granite and it left the surface clean and very shiny. I did note, however, that after the initial cleaning I needed to retrace my path to clean off any excess or it left a film. But with the film cleaned off it looked brilliant.

Do you have any experience with using Hydrogen Peroxide for cleaning granite countertops and if not, do you have any concerns about doing so?

Cheers, Craig

ANSWER:

Yes, Hydrogen Peroxide is commonly used on marble and granite countertops for stain removal... not so much for cleaning though.

You'll find complete and detailed information in our Granite & Marble Maintenance e-books about using hydrogen peroxide and other ingredients (different chemicals are needed for removing certain types of stains) to remove stains, etc.

I wouldn't recommend peroxide as a regular cleaner though since it is a bit acidic.

Most granite will not be harmed by acids right away like marble will... but still you shouldn't go out of your way to constantly expose the surface to acidic substances.


Over time regular use of acidic or harsh cleaners can etch and dull the polish and degrade the granite sealer.

Besides, polished granite has a high "cleanability" index (comparable to stainless steel) and is very resistant to bacteria growth. There's no need for overly aggressive cleaning like in a hospital. Hospitals are swarming with bacteria and need constant disinfecting. Not so bad in your home.

I recommend using just hot water for general clean up and then a few sprays of a stone cleaner like this Granite & Marble Cleaning spray for cleaning granite countertops (or any natural stone) at the end of the day.

And if you really want the granite to sparkle and shine, you may consider also using a Topical Polish/Shine Enhancer once or twice a month.

Yes, specialty stone products are more expensive, but using the proper granite cleaning products will eliminate 90% of the problems people most commonly ask me to solve for them. It's just more prudent to use products that work best for stone.

But using hydrogen peroxide for a general clean 2 or 3 times a year or after you've exposed the surface to a lot of meat or fish (probably the best use of H2O2) is fine for granite.

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granite countertop mold
by: Anonymous

How do I clean mold that has grown into the granite countertop?

You should use this Mold & Mildew Stone Cleaner.

Specially formulated for safe use on stone and very effective. Spray on, let sit 5-10 minutes then scrub with soft-bristle brush or nylon pad.

Although I have to say mold on a granite countertop is HIGHLY unusual, so you should look at what caused the mold to develop as well (constant source of water, lack of ventilation, etc.) and fix those problems too.

Good Luck!

Disinfecting granite countertop
by: Maria

Hello, I have a question about disinfecting my kitchen granite countertop. I have a cat that loves to jump on my kitchen countertop. I hate that, and I am trying to train him not to do so. However, I feel that I need to disinfect the countertop since his paws are al over the place, especially in the litter box. Do you know what I mean? I use my kitchen counter to prepare dinner etc. Do you have any idea what I can use to disinfect my beautiful granite countertop daily without harming i?
Thank you so much.
Maria
Protis4@comcast.net

====ANSWER:

You can safely disinfect your granite, natural stone and quartz countertops using BLAST, which is designed to clean mold and mildew and will disinfect any surface.

Good Luck,
Ryan

how to clean a tumbled marble shower
by: Anonymous

we have tumbled marble in our shower and it gets mildewed. How do I properly clean it without harming the stone? Of course, being a shower, it is hard to keep it dry to the point that it doesn't occasionally mildew. Can I use hydrogen peroxide or a diluted bleach?

ANSWER: You could use either on tumbled marble PROBABLY without much ill-effect, but both will etch marble. The etching may not be too noticeable on tumbled (vs polished) marble but you never can tell.

The best product to use is: MB-9 Mildew Stain Remover. Follow the link at the top of our "Products" page to order.

Also, consider that if you have a recurring mildew problem, then you also have a ventilation problem or worse a leak or moisture getting trapped behind the tiles because of cracks in grout or simply a poor installation.

Inspect your grout thoroughly and make sure the bathroom good enough ventilation to dry out your shower daily and use a squeegee after use to remove excess water.

Good Luck,
Ryan

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