If there are no sealed granite countertops, stains will change the color of peel and stick granite countertops, and the stone could harbor bacteria. You need to seal your granite countertops once a year. Simply buy granite sealer from your local home improvement store and follow the directions on the product, but always use a nontoxic sealant on food preparation areas. While a modular granite countertop generally resist stains and damage, some maintenance is required to keep the finish clean. In the event that a stain is not inserted, special detergents may be required or the surface may be cleaned with a polishing powder or diamond abrasive.
Most of the time, a modular granite countertop is cheaper than other types of counter tops. Manufacturers typically pre-seal the product so it is protected and ready for use in the kitchen. If your granite countertops are sealed properly, you will never have to use bleach or strong chemicals to get rid of stains. Instead, use mild soap and water to clean up waste immediately. Stains on bright peel and stick granite countertops show lighter than on darker granite. Foods such as tomatoes, grape juice and coffee will color granite quickly, especially because of the acidic content in the foods.
There are more covers that you can make from ingredients already available in your kitchen. Mix a few dishes of detergent with a cup of flour and add a few drops of water to make a thick paste. Apply porridge to the stain of peel and stick granite countertops, cover it with a plastic wrap and let it sit overnight. The next day, scrape porridge with a plastic or wooden tool, and then flush the stained area with a soft cloth and water. If the stain was caused by fat, milk, or oil, make a porridge of a cup of flour mixed with a few tablespoons of hydrogen peroxide and leave the porridge to sit on the spot overnight.