A clean granite countertops makes a bigger difference than you'd think. Here's the most effective method, plus the mistakes most people make.
For everyday cleaning, wipe with a microfiber cloth dampened with warm water.
For stubborn grime, use a granite-specific or pH-neutral cleaner. Spray on, let sit briefly, and wipe with a soft sponge.
Wipe with a clean damp cloth to remove any cleaner residue.
Buff with a dry microfiber cloth to prevent water spots and bring out the natural shine.
Once a year, apply granite sealer to maintain stain resistance. Test sealing by dropping water -- if it doesn't bead, time to reseal.