Q.: While using spray paint on one of our jobs, workers got the paint on a new concrete surface. Is there any way to remove it without leaving a stain?

A.: One contractor told us that PROSOCO, Lawrence, Kan., makes a rinseable, methylene-chloride paint stripper called Fast-Acting Stripper. He brushes on the material, lets it sit for 5 to 10 minutes, and then rinses it off with a pressure washer.