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  • Regular price $74.85

F9 BARC is known to be the world’s best concrete stain remover, offering a specially formulated solution designed to eliminate both battery acid and rust stains effectively. This versatile product is capable of tackling a broad spectrum of rust-related issues on various surfaces such as concrete, brick, pavers, stone, stucco, pool decks, asphalt, rubber, epoxies, painted surfaces, concrete coatings, shingles, and more! 

What sets F9 BARC apart is its efficiency in stain removal without the need for labor-intensive tasks like scrubbing, brushing, mixing, or dealing with messy pastes. The formula chemically binds to the concrete, exhibiting a remarkable ability to reverse 80-100% of orange battery or rust staining. As a result, it not only removes unsightly stains but also restores concrete surfaces to their natural gray color.

F9 BARC prides itself on being a biodegradable, non-abrasive, and non-flammable solution, prioritizing safety for both people and plants. This concrete stain remover is a much safer alternative to hydrochloric acid, a common yet hazardous substance used for similar purposes.
For optimal results, the recommended pre-application cleaning method is professional power washing. The concentrated formula ensures that a little goes a long way, making it a cost-effective solution. Moreover, for surfaces other than concrete, F9 BARC can be diluted with up to 3 gallons of water. However, a compatibility and strength test is advisable before widespread application.

Please note that F9 BARC boasts a shelf life of up to five years when new and unopened. Once opened, the shelf life is reduced to approximately two and a half years


  • Reverses Damage and Restores Concrete
  • Shelf Life of 5 Years When New/Unopened
  • Safer to People and Plants than Hydrochloric Acid
  • Restores Concrete to Its Natural Bright Gray Color
  • Does Not Involve Mixing, Brushing, or Messy Pastes
  • Does Not Lose Strength Over Time
  • Quickly and Easily Removes Orange Battery Acid Burn, Rust, and Fertilizer Stains
  • Biodegradable, Non-Abrasive, Non-Flammable
  • One Gallon Covers an Area of 400 to 800 Square Feet of Concrete
  • Safe to Use on Concrete, Bricks, Pavers
  • Safe to Use on Tile, Asphalt and Concrete Coatings

Available in: 4 Liter, 4 x 4 Liter Box, or 20 Liter Pail

SDS Sheet