Q. I had a delivery guy accidentally drop two bottles of olive oil on the stone in the hallway of my apartment building. I'm not sure what kind of stone it is, but it's matte looking and apparently very porous. Now, my landlord is saying I... Read More

Q. Any help as to how to remove crayon from stone would be greatly appreciated! A. Crayon marks on stone are a combination of wax and pigment. Both will need to be removed from the surface and the pores of the stone. Start by carefully scraping any... Read More

Q. How can I remove a boiled linseed oil stain from natural stone? A. Boiled linseed oil can leave a dark, sticky, and persistent stain on natural stone that doesn’t respond to simple cleaning. It penetrates the pores of stone and resists water... Read More

Q. We have 4 chocolate stains on our natural stone hearth. The stains have been there just a few days. We got off the actual chocolate and tried to clean the stain with a window surface cleaner. It helped but the stains remain. How should we proceed?... Read More

Q. Can an impregnator be used to waterproof stone? A. Not exactly. An impregnator will make the stone water resistant, but it will not make it waterproof. Impregnating sealers are designed to penetrate the surface and fill the microscopic pores... Read More

Q. A blue candle was left on my stone counter. Heat and humidity caused it to stain the stone blue. How do I remove the stain. If a poultice is recommended, what do I use. Thank you. A. There are two concerns to address here. The wax itself may have... Read More

Q. My puppy pooped on our limestone hearth, and it left a stain. What should I use to remove the stain? A vinegar and peroxide solution? A. Vinegar might seem like a natural cleaner, but it’s actually one of the worst things to use on... Read More

Q. Wax from a citronella candle spilled onto my outdoor natural stone bench. Please advise on a remedy to remove this. A. Candle wax can present a few issues. The candle wax that has melted onto the surface and into the pores of the stone will need... Read More

Q. I very recently purchased a bluestone dining room table. There is now a white circle. I'm thinking that it came from a beer bottle that was placed on the table without a coaster. I tried a poultice of baking soda and water paste, but it did... Read More

Q. Spilled gun cleaner on my stone topped coffee table. It left a white stain. How can I remove this? A. Natural stone may not look porous, but it is. Liquids and chemicals can soak below the surface. Gun cleaners often contain strong solvents that... Read More