Hydrogen peroxide can be used on both porous and non-porous surfaces. Three percent hydrogen peroxide can be sprayed directly on the porous material.
Spray the mold with bleach in a spray bottle. Go away. Come back in 15 minutes or so and it'll be gone. No scrubbing required. Rinse with water.
Vinegar: White vinegar can kill about 82% of mold species. Spray undiluted vinegar on the affected area, let it sit for an hour, and then wipe clean.
Bleach kills most mold. White vinegar kills slightly more species of mold. In both cases, mold on a porous surface will likely recover because the chemical doesn't penetrate down to ALL the mold. Physical removal is easiest on things like drywall.
Hydrogen peroxide, commonly used to disinfect wounds, is active against a wide variety of micro-organisms including mold. It acts by releasing oxygen at a rapid rate, which kills mold by oxidizing the surface and breaking down proteins and DNA.
White-distilled vinegar is mildly acidic and has been shown to kill types of mold. Vinegar is free of chemicals, so it is environment-friendly and safe for people and pets. Baking soda can be added to vinegar to tackle different types of mold as it kills different mold strains.
Yes, you can leave vinegar on mould overnight, though this isn't necessary as it usually takes effect after an hour. However, you can't use any type of vinegar, for mould removal you must use distilled white vinegar.
White vinegar, also known as distilled vinegar or spirit vinegar, is made by fermenting grain alcohol (ethanol) which then turns into acetic acid. Water is then added to the vinegar, so white vinegar is made of five to ten percent acetic acid and ninety to ninety-five percent water.
Mildew has a gray, white or light brown color and generally rests flat on the surface of a moist area. It has a powdery appearance that may have a distinct, foul odor. Mold has a fuzzy, raised appearance and in unaired areas has a strong, musty smell. It often appears in darker shades of black, green and red.
Baking soda is a natural cleaning agent that can be used to clean black mold off surfaces. To use baking soda, mix ¼ tablespoon of baking soda per cup of water in a spray bottle and spritz the moldy area. Let the baking soda solution sit for several minutes before scrubbing the area with a brush or sponge.
Biocides are substances that can destroy living organisms. The use of a chemical or biocide that kills organisms such as mold (chlorine bleach, for example) is not recommended as a routine practice during mold cleanup.
Quality mold remediation professionals may use brushes or sponges and specialized cleaning solutions to remove mold colonies alongside vacuums to extract spores. It is necessary to ensure that every part of a structure is free of mold before restoration starts.
Almost Indefinite Shelf Life
Vinegar is a fermented product and has an “almost indefinite” shelf life according to the Vinegar Institute. “Because of its acid nature, vinegar is self-preserving and does not need refrigeration. White distilled vinegar will remain virtually unchanged over an extended period of time.
The truth is, vinegar does not kill 100% of mold in most cases. It only works on a very small number of surfaces, and only if the moldy area is very small. Even then, mold often comes back after vinegar.
More serious stains will need a higher concentration of vinegar. As much as just vinegar is fine! You should note that while vinegar is good at drawing a stain up and out of the concrete, it will damage the concrete if left on it for too long. It's best to keep the vinegar on for no longer than 15 minutes.
Vinegar is better at killing mold because it can work on both porous and nonporous surfaces. It also terminates molds at their roots so the mold won't return and is also safer than bleach. You can even combine it with baking soda to make it more effective.
For large amounts of mold, the only method that kills mold 100%, every time, is removing all of the mold-infested materials entirely, and replacing them with new materials.
Mixing vinegar and baking soda causes an immediate chemical reaction. This reaction forms water, sodium acetate (a salt) and carbon dioxide – the fizzy part. The amount of carbon dioxide gas that is produced from baking soda is remarkable – one tablespoon (around 18 grams) can release over five litres of gas!
If you don't have hydrogen peroxide, use distilled white or cleaning vinegar. Distilled white vinegar's acidity slowly breaks down and kills mold but does so much slower than cleaning vinegar.