What's the best way to clean granite countertops? We've read a lot of varying views on this — use Windex! No, never use Windex! Use a special granite-only cleaner! No, you don't need a special granite-only cleaner! — but after doing our research, we think we've discovered a consensus among stone experts on how to care for granite. The best part? You really don't need any special cleaners to get those countertops shiny and streak-free.