"Maintenance An article on Ask.com offers advice on how to maintain granite countertops: Even though it’s not as porous as marble, granite sometimes needs to be sealed regularly in order to stay stain-resistant and maintain its durability and overall appearance. When in doubt, use a warm water and soap mixture to clean your granite. Granite can be vulnerable to etching when put in contact with acidic liquids like lemon juice and vinegar. Kitchen countertops for St. Louis homes should be made of sturdy, durable, and long-lasting materials—all qualities that granite possesses. By getting a countertop installed right, and maintaining it properly, you can rest assured it will serve you well in all your food preparation, cooking, and other kitchen needs."