Bleach: While bleach is a great disinfectant, it can dull the finish of your granite and in some cases even change its color. There are other, safer, ways to disinfect your stone, so avoid bleach and any products that contain it when cleaning your granite.
Spray vinegar on the entire sink surface and let it soak for 30 minutes. You can place paper towels on the sink to allow the vinegar to stay soaked on the sink surface. After 30 minutes use a brush to scrub, and then rinse off with water.
Harsh Chemicals
Avoid substances like bleach and harsh chemical cleaners as this could damage the surface of your sink and cause staining. Chemicals to avoid include ammonia, sodium hydroxide, hydrochloride and sulphuric acid.
Cleaning Instructions
Wipe with a Mr. Clean® Magic Eraser® and either water or a 50/50 white vinegar and water solution. Towel dry with a cotton cloth.
Tips For Keeping Granite Sinks Clean
We recommend using a mixture of baking soda and white vinegar to deep clean your granite sink. You should always avoid highly harsh chemicals or abrasives such as ammonia and steel wool.
Yes, composite sinks can withstand boiling water. There is no issue with pouring hot water down a granite, quartz, or solid surface sink.
Don't pour soap directly on granite countertops. Stone is porous, and full strength soap can seep into pores causing tough to remove stains. Always dilute your soap with water before cleaning. Don't use an abrasive scrubber.
Hard Water Mineral Deposits (Calcium, Magnesium, Lime)
These spots are called mineral deposits. Early on, these mineral deposits are seen as water spots and, if not treated properly, will spread or form into crustaceans. Mineral deposits require specific types of cleaning solutions to be effective.
So 70% isopropyl alcohol is the best disinfectant for granite countertops. If you don't have 70% isopropyl alcohol or can't find one in the store, you can also use soap that has antibacterial properties.
Stubborn Stains – A solution of 50% bleach, 50% water should only be used for tough, stubborn stains. Let the solution sit in the bottom of the sink for one hour; then scrub. Rinse well. Also, the use of Bar Keepers Friend (directions included on bottle) will help remove stubborn stains.
A well-sealed granite countertop is relatively impervious to bacteria. Hot water and dish soap should be adequate for daily sanitizing. However, if a disinfectant is desired, reach for a bottle of 70% isopropyl alcohol.
Clorox Wipes/Clorox Multi-Purpose Cleaner
The multi-purpose cleaner contains bleach, which is extremely harmful for granite and many other natural stones. The wipes are also a cleaner you should stay away from, as they contain citric acid that can cause your sealant to wear down.
Clorox and Lysol sprays and wipes are convenient, but they are not safe for granite countertops. They rarely contain bleach, but they do generally contain citric acid to help remove soap scum. Avoid using bleach as well.
The acids contained in these cleaners will degrade the sealant and can leave unsightly stains on the countertop. That means those Clorox disinfecting wipes (which contain citric acid) that make cleanup so easy are actually quite bad for your granite's seal.
Warm water and dish soap: The best way to clean granite countertops is to use a mixture of warm water and mild dish soap, such as cleaning with Dawn Powerwash, says Ahmed Jamal, cleaning expert behind CleaningAdvisor.
Luckily, everything you'll need to clean your hard surfaces can already be found in your home: Concentrated dish soap that's tough on stains and grease while staying gentle on stainless steel, granite, and glassware, like Dawn® Platinum Powerwash Dish Spray.
At such pH levels, baking soda can be described as being caustic, which means it isn't safe to use on natural stone.
This type of sink is easy to clean
Using a non-abrasive cleaner will keep it clean. Taking care of it properly will preserve its color for many years. Keeping it clean is also important. You can use a magic eraser sponge to remove stains and a 50/50 water-bleach solution for cleaning.
The fact is, the porous nature of granite can lead to absorption of water through tiny holes that are not visible to the naked eye. Just a small amount of water left to dry on your countertop may not cause a problem but if it is left for a very long period of time, it could cause the counter to darken in that one spot.
One of the most effective ways to prevent water stains on your granite countertop is to seal the surface. Applying a sealant will fill the pores of the stone and stop stains from penetrating the surface, allowing them to be wiped away quickly and easily.
You can use Mr. Clean Magic Eraser, then thoroughly rinse with dish soap and water. You can then apply mineral oil on the sink once dry to bring back its dark sheen.
Composite granite sinks are quite durable and can last decades with normal use and proper care. Just be sure to follow the manufacturer's suggestions for cleaning (usually mild dish soap and warm water) and avoid using harsh or abrasive cleaning agents (baking soda is okay) as they can damage the surface of the sink.
'If you need to perform a deep clean due to deep stains - use a homemade mixture of baking soda or white vinegar (either is good, just make sure it's a small amount) and combine it with water. Add this mixture to a soft cloth or a brush with soft bristles to tackle the harder stains.