granite is a natural stone product and has a certain degree of porosity. therefore, after installation, it must be cleaned and sealed. you can clean your countertops with only soap and water, but there are companies that specialize in granite countertops cleaning and sealing products makes taking care of your countertops very easy. you can buy individual cleaners and sealers, or get everyting you need in our convenient care kits.the rossini marble and supplies have everything you need, that includes granite countertops cleaner, sealer and polish along with easy visit www.rossinimarble.com