My husband who is a mechanic came home one day his overall covered up with grout and grease. Without realizing it he plopped on the sofa to watch the football game. After the game finished he got up and to my horror all the grease had left a huge spot on the sofa. A friend recommended this Carpet Cleaning Company that specialized in Grout cleaning. Lo and Behold they came and after a few days my sofa was delivered back as good as new. God Bless them!