Concrobium Mold Control 1 Gal Refill vs RMR-86 Mold and Mildew Stain Remover Spray, 2 pack

Overall winner: RMR-86 Mold and Mildew Stain Remover Spray, 2 pack

Key Differences

RMR-86 (A) is sold in a 2-pack spray format with an instant, scrub-free formula and a lower listed price tier, favored for quick stain removal but noted for a strong odor. Concrobium (B) is a 1-gallon refill that is EPA-registered, bleach-free and odorless with coverage of 800–1,600 sq ft per gallon, but some customers report spray mechanism issues and mixed value impressions

Concrobium Mold Control 1 Gal Refill

Concrobium Mold Control 1 Gal Refill

Concrobium • ★ 3.8/5 • Mid-Range

Mold and mildew eliminator with odorless, bleach-free formula. Creates an invisible barrier as it dries. Customers report effective mold control and easy use, with some noting no strong chemical odor

Pros

  • odorless solution
  • bleach-free formula
  • eliminates mold and prevents regrowth
  • covers up to 800-1600 sq ft per gallon

Cons

  • spray mechanism can malfunction
  • some perceive value for money concerns
  • may leak
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RMR-86 Mold and Mildew Stain Remover Spray, 2 pack

RMR-86 Mold and Mildew Stain Remover Spray, 2 pack

RMR Brands • ★ 4.2/5 • Budget

Instant spray cleaner removes mold and mildew stains with a scrub-free formula. Easy spray-and-wipe action, but some users report a strong odor and sprayer issues

Pros

  • removes mold and mildew stains
  • scrub-free spray application
  • multi-surface use (decks, wood, vinyl siding)
  • professional-strength formula

Cons

  • strong odor reported
  • sprayer functionality issues reported
  • mixed value-for-money perception
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Head-to-Head

CriteriaWinner
Price RMR Brands
Durability Concrobium
Versatility RMR Brands
User Reviews RMR Brands