if the white marble tabletop already has stains, can I use this now?

I can't answer that question with impunity, but I can tell you that I have used this product on granite and marble and it has been impervious to stains of any kind for 5 years, and fluids still bead on it. It is the best stone sealer that I have found. Saying that, it is understandable that there are no stains at all on the countertop and floor that were new when I sealed them. I might scrub stained marble with CLR , rinse well, and allow it to dry a couple of days to to be rid of some soaked in stain. I have never had to deal with marble that had penetrated stains, so I can't be certain that my suggestion is a good one. Without a professional to assist in the suggestion, you might be taking a chance using something previously untried on a white highly porous stone. Personally, I would never want marble in a kitchen, because of fruit, wine/juices, grease, and dark sauce stains. Good luck,

Can I use this product to seal grout as well?

Hi JoyYesIt's a super grout sealant as wellRegardsWilliam

How long should I expect the solvent odor to linger in the room if I were to use it on the kitchen countertops (and turn on an exhaust fan or two)?

about an hour. We opened hte back door and used exhaust fans in the bathroom

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Stain-Proof Plus Premium Impregnating Sealer for Natural Stone and Concrete Countertops

Stain-Proof Plus Premium Impregnating Sealer for Natural Stone and Concrete Countertops

Product ID: 348252140

Details

Brand
DRY-TREAT
Item dimensions L x W x H
22 x 16 x 10
Item weight
454 g
Style
Custom
Water resistance level
Water

💧3-level deep penetration

🌬️Breathable formula prevents moisture buildup

🛡️15-year stain & damage protection

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€ 278.62

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Seal in the elegance, seal out the stains — your countertops’ ultimate armor!

BREATHABLE BARRIER - Allows water vapor to escape, preventing moisture damage and preserving finish
LONG LASTING SHIELD - Protect your stone surfaces for up to 15 years without reapplication
EFFORTLESS MAINTENANCE - Makes cleaning a breeze with streak-free, residue-free results every time
VERSATILE SURFACE SAVIOR - Perfect for granite, marble, concrete, basalt, bluestone, quartzite & slate
TRIPLE ACTION PENETRATION - 3 custom sealing molecules dive deep for unmatched stain defense

Stain-Proof Plus Premium Impregnating Sealer delivers deep, triple-molecule penetration to protect natural stone and concrete countertops from water, oil, and salt stains. Its breathable formula prevents moisture buildup while preserving the natural finish. Suitable for indoor and outdoor use on a wide range of surfaces, it offers up to 15 years of durable, easy-to-maintain protection, making it the go-to choice for professionals and homeowners who demand lasting beauty and performance.

Specifications

ASIN	B007ZDGUAY
ASIN	B007ZDGUAY
Best Sellers Rank	#39,950 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #257 in Hardware Sealers
Brand Name	DRY-TREAT
Color	clear
Compatible Material	Granite, Marble
Customer Reviews	4.5 4.5 out of 5 stars (356)
Customer reviews	4.5 4.5 out of 5 stars (356)
Date First Available	18 March 2014
Global Trade Identification Number	00884949000600
Is Discontinued By Manufacturer	No
Item Dimensions	22 x 16 x 10 centimeters
Item Weight	1 Pounds
Item model number	110712
Manufacturer	DRYTREAT
Manufacturer	DRYTREAT
Model	110712
Number of Items	1
Part Number	110712
Product Dimensions	22 x 16 x 10 cm; 453.59 g
Style Name	Custom
Surface Recommendation	Countertop
UPC	884949000600
Unit Count	16.0 Fluid Ounces
Water Resistance Level	Water Repellent

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 278.62

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Smooth transaction and product arrived in perfect condition.

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