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.
Apply the bleach solution
Allow the bleach solution to contact the surface for up to 15 minutes. Work in smaller sections if the patio is too large to finish in that time.
After disinfection with bleach solutions, surfaces should be rinsed and dried. Bleach can be irritating to skin and mucous membranes, so any residue should be removed prior to returning animals to the environment.
When bleach is left to air dry on floors and is not rinsed away, it can leave behind bleach crystals after the bleach evaporates. Sodium hypochlorite will break down into salt and water when left to do so. Since undiluted bleach is mostly water to begin with, once the floor dries, salt crystals will be left behind.
Say, for example, you're mopping the floor with a bleach solution and leave the room for a moment. Your dog or cat may lick the wet floor, or even take a drink from the mop bucket. And even after the floors have dried, your pet may still get sick from licking it; bleach residue is still toxic even when it's dry.
Expect the smell of bleach to remain on the surface for 10 to 60 minutes after use. That is also how long bleach stays active after coming into contact with a surface.
Bleach needs to be heavily diluted when used in cleaners and is only safely mixed with plain water. It is critical to note that bleach and other ingredients combined can put off extremely dangerous, toxic fumes. This is why when we make our own cleaning products, we nearly always avoid bleach as an ingredient.
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.
Leave the Bleach on the Pavers
Allow the bleach to sit on the pavers for about 10-20 minutes. This will help to disinfect and clean the surface. It will also help remove any stains that are tough to remove and mold.
Cleaning products such as bleach and ammonia, are not fans of extreme temperature changes and while they can be stored in garages, they do require a separate storage unit, to maintain the necessary temperatures.
Always follow the manufacturer's instructions for applying the bleach solution to surfaces. If instructions are not available, leave the diluted bleach solution on the surface for at least 1 minute before removing or wiping. This is known as the “contact time” for disinfection.
You should never attempt to clean your sealed or polished concrete floors with ammonia, bleach, citrus cleaners, pine based cleaners, vinegar or any highly acidic substance. These are not pH neutral, and could break down or dull the sealant on your concrete flooring.
Be sure to rinse away all traces of the sodium hypochlorite solution. Allow the patio to dry: Allow the patio to air dry completely before replacing any furniture or other items.
Leaving bleach in a toilet overnight is fine, but you shouldn't leave it any longer, or else it might corrode your toilet. If you do decide to leave it in the bowl overnight, let other members of your household know so that they don't use the toilet and accidentally mix the bleach with ammonia from urine.
Mix 3/4 cup of bleach with 1 gallon of warm water, wipe down the surface, then let sit for 10 minutes before rinsing with warm water.
Long-term (chronic) effects:
Long-term exposure to low levels of chlorine gas could cause permanent lung disease such as bronchitis and shortness of breath. It can also cause tooth corrosion. Long-term exposure is mostly found in the workplace.
2.2 grams (one teaspoon) of sodium metabisulfite added to 2.5 gallons of water effectively neutralizes all harmful bleach residue.
Bleach should be washed out as soon as your desired level of lift is achieved, and should never be left in for longer than 45 minutes at the most to prevent damage to the hair, and should be checked frequently throughout the bleaching process.
You might need to reapply bleach to get the desired color sometimes. But, even then, it is recommended that you do not exceed the 30-minute mark. Bleach takes about 10-15 minutes to lighten fine hair, 30 minutes for dark or coarse hair, and 15-20 minutes for blonde hair.
As a general rule, the length of time that bleach is in your hair should not exceed 45 minutes. Any longer than this and your hair strands will look and feel fried! Make sure you follow the advice and instructions on the pack. After bleaching, your locks will feel slightly weaker and will likely need some 'TLC'.
Allow the 200ppm bleach solution to sit on the surface for at least a full minute to give the bleach time to work. With a 200ppm dilution, rinsing is not necessary, and it's actually best to allow most surfaces to air dry rather than re-contaminating with a cloth towel.
Wash surfaces with the bleach mixture. If surfaces are rough, scrub them with a stiff brush. Rinse surfaces with clean water. Allow to air dry.