For cleaning my granite countertops, I use a homemade solution in a spray bottle. Water, a small amount of rubbing alcohol, and a small amount of Dawn. Every week, I shine them up with a special granite cleaner I picked up at the store (it's foamy - and smells rather strong). NOw they are now 6 years old. They were sealed by the installer. Though granite needs regular resealing. Some people have told me to do it every 6 months; others have told me every 2 -3 years. I did some research on this and here is what I found out.