Q. Hi, I recently acid cleaned my granite tiles using a 1:20 hydrochloric acid to water solution. The problem is I didn't wet the tiles first so now the tiles look spotty. Is there any way I can remove the acid from the granite tiles? I am keen... Read More

Q. I have unsealed travertine outdoor tiles that are badly stained from a large pot. This pottery pot had a large palm in it. It became clogged and, with so much rain over time, started oozing dirty water from the pot. The breakdown of the pottery... Read More

Q. My countertops were just installed and the tile guy left an ink pen on the island counter. It leaked and I now have a blue stain on my Calacatta marble slab. Any advice on how to remove it. I used acetone and alcohol. It did lighten up, but I can... Read More

Q. My new puppy climbed up on my limestone hearth slab on my fireplace and pooped. I cleaned it up right away, but there is a shadow of a stain left behind. What would I use to remove the stain? It's brand new, and we hadn't gotten it... Read More

Q. I have a brown stain on my marble caused by a basket that a house plant was placed in. The stain is brown, the color of the basket. I will use a poultice, but what ingredients should make up this poultice? A. The brown stain on your marble is... Read More

Q. We had a beige sandstone countertop installed for an outdoor kitchen. It is sanded smooth and was sealed with three coats of sealer. I don’t know what kind—just said “sealer” on the can. Some was spilled on our manufactured patio... Read More

Q. I have a water circle stain on my limestone. How do I remove the stain? A. Limestone is a porous, calcium carbonate-based stone that is sensitive to acids and moisture. Liquids can absorb into its surface if it's unsealed or the sealer is... Read More

Q. I spread a dark blue hand towel on the countertop and was working on it, when I removed the towel a couple hours later a darkened stain/discoloration was left behind that outlined where the towel was. I tried a stone cleaner on it, but it won... Read More

Q. I have what appears to be an oily stain (which I think is from candle wax) on sandstone hearth. It‘s been there several years. Is there any hope of getting it out? I tried acetone, and it did nothing. Any help for advice you can provide is... Read More

Q. We have hair line scratches in our granite vanity countertop that looks like it has just scratched the seal and not the stone. Will acetone remove the sealer so we can verify, fix, and reseal the area? Also what acetone would be recommended for... Read More