MSR PLUS (Mold Stain Remover)

Advanced Chemistry for the Professional Remediator. MSR PLUS is a proprietary, ready-to-use, low-odor formula that removes staining caused by mold, mildew, and algae from virtually any hard surfaces within minutes with one application.

Designed for the professional remediators and contractors to reduce labor, time, and costs.

MSR PLUS is a proprietary, ready-to-use, low-odor formula that removes staining caused by mold, mildew, and algae from hard surfaces within minutes of your first application. Always pre-test the surface in an inconspicuous area prior to application.


  • Wood
  • Lumber
  • Vinyl
  • Concrete
  • Tile
  • Grout
  • Fiberglass
  • Plastics
  • Ceramics
  • Sealed Stone

MSR PLUS is ideal for use in confined spaces like attics, crawl spaces, basements, or outdoor patios and decks.

Simply apply MSR PLUS to the stained surface and watch stains disappear. For tougher, set-in stains, a second application or light scrubbing may be needed. Some surfaces may require rinsing with water after application. 

EFFECTIVE. Remove staining and restore surfaces in minutes with one application using a standard, chemical-resistant, garden-type pump sprayer or hand trigger sprayer.

LOW ODOR PROFILE. Low-odor formula with no overpowering chemical smell. Ideal for use in attics, crawl spaces, basements, and confined areas.

FAST-ACTING. Removes stains in minutes.

READY-TO-USE: No mixing required.

COVERAGE: Using a standard chemical-resistant pump sprayer, 1 gallon typically covers 200-250 square feet of moderate staining.  For more severe staining, an additional application may be needed.

It is recommended to follow application of MSR PLUS with an EPA-registered fungicide, such as Bio-Oxygen® Chem Decon, to kill any mold that is on the surface.

Advanced Chemistry for the Professional Remediator

Not available for sale in California

Always wear PPE when applying MSR PLUS. Take caution when pouring to avoid splashing.

For best results, remove any gross filth and heavy soil prior to application. Use standard (chemical resistant) pump sprayer. Using a sweeping motion, lightly spray affected area until it appears wet. No need to soak area for product to work. Wait a few minutes, let product dry, if staining remains a second application may be necessary.

MSR PLUS may not be able to remove all stains. Wood has natural color variation which may not be staining. MSR PLUS may not be able to remove stains imbedded in old grout, silicone, drywall, or hard water deposits. Light scrubbing may be necessary to help remove tougher stains.

Some surfaces may require rinsing with water. DO NOT USE ON FABRICS OR CARPET. MSR PLUS will discolor metal, such as aluminum, steel, and copper. Always pretest surfaces in an inconspicuous area before using MSR PLUS.

It is highly recommended to apply a follow-up treatment of an EPA-registered fungicide, such as Bio-Oxygen® Chem Decon, to protect to the substrate.

How does MSR PLUS work?
MSR PLUS is a surfactant-built sodium hypochlorite (bleach) solution. When sprayed, MSR PLUS penetrates the substrate and eliminates the mold/mildew discoloration within minutes. Once the stain is removed and the substrate has dried MSR PLUS will dissipate.

Does MSR PLUS damage wood?
No. When used as directed MSR PLUS will not damage the wood.

How should I apply MSR PLUS?
Use a garden type sprayer or a hand sprayer (bottle with trigger sprayer).

Does MSR PLUS kill mold?
MSR PLUS is not an EPA registered mold killer. MSR PLUS eliminates the staining and discoloration. To kill mold, it is highly recommend treating the wood with an EPA-registered fungicide, such as Bio-Oxygen® Chem Decon.

What is the shelf life of MSR PLUS?
For best results, use MSR PLUS within 8 months of purchase.

How do I Store MSR PLUS?
Store MSR PLUS in a cool, ground level, dark area away from carpet, upholstery, metal or flooring that may be damaged if any accidental leakage occurs.  Store out of reach of children and animals.