Mine came with a cleaner and sealer that I use once a year. Other than that I just use soap and water. I love my granite! It freaks everyone out when I can put hot pans on top and cut things on it too. Of course I don't normally cut things on it because it dulls my knives. I do make sure that I don't let any thing that stains sit there too long. I know it said in my paperwork not to let a stain sit overnight but I wouldn't even chance that. I can say that I will never ever have any other type of countertop.
Enjoy!