Yes you can clean them with bleach.
Bleach to clean mold on concrete.
It doesn t hurt to scrub after spraying to help with penetration.
To clean mold off concrete you can use either a commercial mold killing product or a diluted bleach solution made with 3 parts water to 1 part bleach.
Borax bleach vinegar and ammonia all have the capacity to kill mold on concrete surfaces.
Mop the concrete floor.
Dip a mop into the bleach solution and wring it out.
Although mold grows in most surfaces with moisture you can use bleach to kill it and fungi growing on hard impermeable surfaces.
Spray the walls with a 1 to 1 solution of vinegar and water and allow the vinegar to dry.
Fill a bucket with 1 gallon of warm water and 3 4 cup of liquid bleach.
But vinegar also disinfects and it penetrates concrete better than bleach.
Since they are organic chemicals they will not be as damaging to plants and people if accidental exposure occurs.
Since concrete is porous it will retain both odors and stains.
Bleach s effects on concrete.
A simple solution of household bleach poured onto the problem area followed by a hot water rinse can remove dirt grime mold and mildew.
However there are few things you need to know first.
Concrete driveways are prone to dirt residue mold or mildew.
In certain instances using a scrubber or a broom with a bleach solution can release embedded dirt.
Bleach serves as an effective spot remover for concrete surfaces.
You can also use bleach to kill mold that grows on impervious surfaces like tiles and tubs but not on porous surfaces.
How to use bleach on concrete floors.
Once all the mold is gone you may want to use a dilute bleach solution to disinfect.
Sweep any dust or debris from the concrete floor with a broom pick it up in a dust pan and throw it away.
However this is only true if you adequately dilute these household products.
Spray the spot with bleach and let it set for about five minutes.