Can steam be used to clean stone surfaces? We have silicone caulking on a granite sidewalk and steam from a hotsy machine is the only method that will take it off.

Steam can be used effectively on stone surfaces but be careful if you use any chemicals such as alkalies. Rinse the surface throughly if using alkaline cleaners.

TIP Another good method for removing caulking, tar or chewing gum from granite surfaces is to freeze the caulking with dry ice or you can purchase a product called gum freeze. Once the caulking is frozen it can be easily pried from the surface of the stone.