Although bleach is great at the whitening effect, you can use peroxide to achieve this. Hydrogen peroxide is an oxygenated bleach. It is safe for plants, so when you rinse this solution, it won't harm anything. It works together with the dish soap and baking soda to remove dirt and whiten dirty concrete.
The Liquid peroxide cleans, refreshes, and brightens concrete, tile, and grout without leaving watermarks or residue in contrast to other cleaning chemicals. Powdered peroxide-based formulas are generally high-performance alkaline, tile and grout cleaners and degreasers that are made for use on heavy-duty concrete.
Make the bleach and water solution
Fill a plastic bucket with 1 gallon of water then add 1/3 cup Clorox® Disinfecting Bleach. Wear gloves, safety glasses and clothing that you don't mind accidentally splashing with bleach solution.
Dish soap and water: Dish soap is a degreaser, and it works well to clean oily and grimy concrete. Create a cleaning solution of warm water and few drops of dish soap and apply it to the surface. Let it sit for a while, then mop the patio and rinse it with fresh water. Repeat the process as many times as needed.
A quick answer is yes! White vinegar can clean concrete and remove stains. It may not be as powerful as concrete cleaners, but it can clean up concrete stains on a budget.
Pressure washing is one of the fastest, most effective ways to get your concrete white again. Concrete can change color over time due to pollen, algae, or dirt buildup, but a good pressure wash can easily remove dirt and stains and make your concrete look new again.
Bleach, Soap, and Water Mixture
Combine bleach, soap, and water to make a powerful cleanser. If you can find a bleach made exclusively for outdoor use, use it instead of household bleach. Mix one cup of bleach with one cup of powdered laundry detergent, then add 15 cups of hot water.
Use a mild grease-cutting detergent such as Dawn or Ajax dishwashing liquid mixed with water and a natural or synthetic bristle scrub brush to help brighten the patio surface. NOTE: Never use a wire brush as it can leave rust stains and scratch the concrete surface.
In fact, vinegar removes mold from concrete better than bleach. Bleach will only remove the top layer of mold, causing the mold to return.
Mixing vinegar and bleach together releases a poisonous chlorine gas, which can be fatal if inhaled at high enough concentrations.
Pour ⅓ cup of Clorox® Disinfecting Bleach into 1 gallon of water in a plastic bucket or container. Apply bleach solution using a brush or broom on horizontal surfaces, and a sponge or mop on vertical surfaces. Heavily soiled surfaces may require additional scrubbing. Wait 6 minutes for disinfecting.
Baking Soda
Salt and commercial ice-melt formulations can stain — or actually eat away — the concrete around your house.
Hydrogen peroxide can discolor or damage certain materials, such as fabrics, leather, and wood, so be sure to test it on a small, unnoticeable area before using.
The inorganic compounds which are useful as concrete dissolvers generally include inorganic acids such as hydrochloric, phosphoric, hypochlorous and carbonic acid. Salts of these acids and alkalies such as sodium-hydroxide, sodium bicarbonate and ammoniumsulfate are also eifective.
As a gentler cleaner, bleach can't harm concrete's durable material. Aside from being an effective cleaner and stain remover, it also acts as a disinfectant to the concrete surface.
Use Bleach
But that's not all; chlorine bleach can also be used for cleaning the concrete driveway. Of course, you should dilute it with equal parts of water or a 1:1 ratio. With the mixture ready, spray it on the driveway, allowing it to sit for 10 minutes. Then, use a stiff brush before rinsing with clean water.
Bleach is commonly used to whiten concrete and is very effective at doing so if the initial stain is removed beforehand. Bleaching stained concrete white prepares it for any additional coloring treatments that you may wish to apply in the future.
Spraying a vinegar solution (1 cup of vinegar per gallon of water) onto the surface, saturating it fully, should kill most strains of mold. Vinegar spray can be followed by power washing or manual hand scrubbing to remove the dead mold.
OxiClean can be used on many surfaces, indoors and out. For removing tannin stains from concrete, first sweep the surface and hose it off. Getting the concrete uniformly damp before you add a cleaner is always a good idea, because doing so will yield more even results.
Another relatively safe and environmentally friendly solution for cleaning concrete is an oxygen bleach product, such as OxiClean. Just be sure to wear rubber gloves, as bleach products can be tough on skin. Sprinkle the powerful solution over the entire patio and scrub it with an ordinary push broom.
Cleansing — For mild discoloration, repeatedly flushing the hardened concrete surface with hot water, then scrubbing with a stiff brush, can reduce or remove discolored blotches. Acid treatment — If the discoloration is more severe, a mild acid solution of 1-3% muriatic acid to water can help remove the discoloration.
Cleaning concrete with muriatic acid can be a highly effective solution if used correctly, providing ultra-bright white concrete and removal of many types of stains. In one application, you can remove rust stains, oil stains, algae, and paint splatter with a quick chemical application followed by pressure washing.