RMR-86 Pro Instant Mold & Mildew Stain Remover - Contractor Grade

In this review the RMR-86 Pro Instant Mold Stain & Mildew Stain Remover is evaluated for contractors and serious DIYers who need fast, reliable stain removal. The bottom line: this gallon-sized, ready-to-use formula is built to remove stubborn mold and mildew discoloration in seconds without scrubbing, making it a useful tool for flood restoration, attic and crawlspace cleanups, and surface preparation. Its professional-strength, hybrid sodium hypochlorite formula delivers immediate visual results on porous materials where ordinary cleaners fail.

Key Features

• Instant stain removal: The specially blended formula uses deep penetrating surfactants and a hybrid of sodium hypochlorite to dissolve mold and mildew stains in seconds on visible surfaces.
• Contractor grade strength: Designed for professional use, the solution is formulated to be significantly stronger than consumer products, speeding large cleanup jobs.
• Ready to use: Comes pre-mixed in a gallon so there is no dilution or measuring, saving time on job sites and eliminating mixing errors.
• Surface versatility: Safe for use on wood, concrete, brick, plywood, drywall, decks, attics and crawlspaces where mold and mildew commonly grow.
• Mitigates damage after floods: The extra-strength cleaner targets stains left by water damage and natural disasters to help restore surfaces without aggressive sanding.

Who It's For

This product is aimed at contractors, restoration professionals, and homeowners tackling extensive mold or mildew staining who need an aggressive, ready-to-use solution that shows quick results. It is especially suited to situations where time is important, such as remediation after floods, where stripping staining without intensive labor helps restore surfaces faster.

Those with very small, isolated mold spots or who need a fragrance-free, non-bleach option should look elsewhere; this formula uses strong oxidizing chemistry intended for professional applications and visible stain removal rather than ongoing prevention or gentle cleaning.

Pros & Cons

Pros

• Very fast visible stain removal on porous and semi-porous surfaces, reducing time spent on each area.
• Contractor-grade strength makes it effective on older, set-in stains left by water damage and disasters.
• Ready-to-use gallon format simplifies large jobs without mixing or measuring.

Cons

• Powerful chemistry means it is not the gentlest option for delicate finishes; users should test a small area first.

Specifications

Product name	RMR-86 Pro Instant Mold Stain & Mildew Stain Remover
Volume	1 gallon
Intended users	Contractors and professional restoration
Key chemistry	Hybrid of pure sodium hypochlorite with deep penetrating surfactants
Ready to use	Yes
Recommended surfaces	Wood, concrete, brick, plywood, drywall, decks, attics, crawlspaces

Our Verdict

RMR-86 Pro is a practical choice for professionals and serious DIYers who need a fast, powerful remover for stubborn mold and mildew stains. Its ready-to-use gallon size and contractor-grade strength deliver real time savings on large or difficult jobs, making it good value for restoration work where aggressive stain removal is required.

Frequently Asked Questions

Is this product ready to use straight from the container?
Yes. The formula is sold ready to use and does not require dilution or mixing before application.

Can it be used on wood and drywall?
Yes. It is formulated for multiple surfaces including wood, drywall, plywood, concrete and brick; test a small area first to confirm finish compatibility.

Is it intended for professional restoration?
Yes. The product is contractor grade and designed for professional use on larger or more severe mold and mildew stains.