NO! If you can clean your countertops, you can maintain your tops. Polished Granite is naturally stain resistant. There are porous spots in some stone, which is filled with the silicons in sealer. The first application is the most important, and we seal every job that we do. Advancements in sealers now recommend sealing every 3 to 5 years, some sealers have a one lifetime application. We still recommend you do it every year just to not lose habit of doing it.