Will this kill and prevent mold from growing on the backside of unfinished drywall and bare unsealed wood?

It doesn't kill the mold, it keeps it from spreading outwardly by encapsulating the spores. Remember mold sends "roots" out into the material. To prevent/kill mold get rid of the moister source and adequately dry the material its on.

How exactly do you use this product? Do you need to cover furniture or other things? How long does it take to dry? How often should you use?

Follow the directions on the label. The basic way is to spray it directly on top of the surface of the mold. It is not sprayed in the air so furniture and other things don't need to be covered. The dry time, if the humidity is normal (low), should be about 5 minutes, max10 minutes as the mold doesn't need to be saturated, just covered. Once all the mold has been covered/sprayed you won't have to use it again, unless the mold has spread to other areas. If this is the case run a dehumidifier to dry out and remove the moisture from material it's growing on and then you can spray the new mold growth.

It says use for fabric. Is this good for painted dry wall too?

Yes, but remember the mold is most likely started on the backside. See my other reply's for additional information. If you just want to hide the stain/mold use a alcohol or shellac based primer then paint. Use in well ventilated area. See other reply's. If you start smelling a musty smell you'll have to dry out the wall cavities and wood framing by removing the bottom 8" or so of the drywall and use a fan to circulate the air in the wall then you can use this product again. Remember you don't want a "sick" unhealthy house.

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🛡️ Mold-free living, effortlessly protected.

MID SIZE JOB READY - Compact 14.1 oz can covers up to 150 sq. ft., ideal for targeted treatments and ongoing mold maintenance.
INVISIBLE MOLD SHIELD - Destroys mold spores and leaves a protective barrier to prevent regrowth—your home’s silent defender.
PRECISION FOGGING POWER - Fine aerosol mist reaches hidden corners and tight spaces where mold hides—no spot left untreated.
SAFE HEALTHY AIR QUALITY - Bleach-free, odorless, and VOC-free formula ensures mold control without compromising your indoor environment.
VERSATILE SURFACE COMPATIBILITY - Effective on drywall, wood, tile, grout, concrete, and fabric—perfect for every nook and cranny.

Concrobium Mold Control Aerosol is a 14.1 oz EPA-registered, bleach-free solution that eliminates existing mold and prevents future growth by forming an invisible antimicrobial barrier. Its fine aerosol mist targets hard-to-reach indoor and outdoor surfaces safely, without harsh odors or VOCs, making it perfect for mid-sized mold control jobs on a variety of materials.

AR$51783

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Manufacturer	Rust-Oleum
Part Number	27400CAL
Item Weight	14 ounces
Product Dimensions	2.5 x 2.5 x 9.7 inches
Country of Origin	USA
Item model number	27400CAL
Size	14.1 Fl Oz (Pack of 1)
Color	Clear
Style	Aerosol
Material	Plastic
Volume	12 Fluid Ounces
Item Package Quantity	1
Coverage	100-150 sq. ft. per 14 oz. can
Special Features	Antimicrobial
Usage	Inside; Amateur, Inside; Professional
Included Components	Mold Control Aerosol
Batteries Required?	No
Warranty Description	Warranty

Concrobium Mold Control Aerosol, 14.1 oz – Eliminates & Prevents Mold – EPA Registered, Bleach-Free, Odorless, VOC-Free – For Indoor & Outdoor Surfaces, Mid-Sized Jobs, and Hard-to-Reach Areas

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