--- product_id: 631451134 title: "Generic Front 9 BARC Concrete Rust Remover 1 Gallon" brand: "duuous" price: "¥20297" currency: JPY in_stock: true reviews_count: 8 category: "Duuous" url: https://www.desertcart.jp/products/631451134-generic-front-9-barc-concrete-rust-remover-1-gallon store_origin: JP region: Japan --- # Covers 400-800 sq ft per gal 1 gal concentrate → 1.5-3 gal cleaner Biodegradable & non-flammable Generic Front 9 BARC Concrete Rust Remover 1 Gallon **Brand:** duuous **Price:** ¥20297 **Availability:** ✅ In Stock ## Summary > ✨ Restore your surfaces, skip the hassle, and join the clean concrete revolution! ♻️ ## Quick Answers - **What is this?** Generic Front 9 BARC Concrete Rust Remover 1 Gallon by duuous - **How much does it cost?** ¥20297 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/631451134-generic-front-9-barc-concrete-rust-remover-1-gallon) ## Best For - duuous enthusiasts ## Why This Product - Trusted duuous brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Smart Formula:** Biodegradable, non-abrasive, and non-flammable—clean with confidence and care for the planet. - • **Effortless Coverage:** One gallon transforms into up to 3 gallons of powerful cleaner, maximizing your value and efficiency. - • **No Fuss Application:** No mixing, brushing, or pastes needed—just mix with clean water and apply for instant results. - • **Wide Surface Compatibility:** Safe on concrete, bricks, pavers, tile, asphalt, and coatings—versatility that fits every project. - • **Powerful Rust & Stain Removal:** Eradicates battery acid burns, rust, and fertilizer stains fast, restoring concrete’s natural bright gray. ## Overview Generic Front 9 BARC Concrete Rust Remover is a high-performance, eco-friendly concentrate that cleans 400-800 sq ft per gallon. Safe for multiple surfaces, it quickly removes rust and stains without harsh chemicals or complicated prep, restoring concrete’s natural look while maintaining strength. ## Description Mixing and Coverage: One gallon of F9 BARC concentrate makes 1.5 to 3 gallons of cleaner, suitable for 400-800 square feet of concrete. Always mix with clean water before use. Usage Restrictions: Only F9 Authorized Applicators, Contractors, or Maintenance Departments may use F9 BARC. Users agree to these terms upon purchase. Safety and Application: Do not use on glass. Safe for concrete, bricks, pavers, tile, asphalt, and concrete coatings. It is biodegradable, non-abrasive, non-flammable, and safer than hydrochloric acid. Performance: Effectively removes orange battery acid burns, rust, and fertilizer stains, restoring concrete to its natural bright gray color. The product is durable, does not require mixing, brushing, or messy pastes, and maintains its strength over time. Review: Shockingly good stuff! - When reading product reviews I tend to take with a large grain of salt those that are overly effusive in their praise of the "miraculous / amazing / out of this world" performance. Well, be forewarned, this is one of those review. But I'll back it up. I had an air conditioning condensation drain that clogged, resulting in the overflow drain pan constantly being full. Over time that pan rusted, and the drain for the pan dropped out over a small roof section over my garage. Over the months (years?) that left a nasty rust stain on my asphalt shingles. No damage to the shingles, just unsightly. I tried to clean the stain by hand with CLR (nothing), and even tried pressure washing it . . . carefully (I know, not a great idea . . . and it didn't work). So I started searching around the internet looking for something. I eventually ran across a video where the user praised the amazing job this BARC product did. Out of other ideas, I spent the money for a gallon (at $60 or so I sure HOPED it would work), and gave it a try. And the result is just amazing. I poured the BARC into a spray bottle and got to work spraying the stained area. The rust stain pretty much dissolved before my eyes. I stopped halfway to admire the change, and though the shingles were wet I could clearly see the red had disappeared (check out the picture). Well, I finished up the affected area and let it marinate for a half hour or so just to make sure it had enough time to do its thing, and then went back up and rinsed it off. In short, the stain was GONE! There are no noxious fumes, and my fingers didn't smoke and dissolve when I got a bit of it on me. IT JUST WORKED! I know it's pitched as being for rust stains on concrete (I tried that too and also works there), but it darn sure fixed my shingles stain. And the good news is, I have a lot left over for future cleanups. AMAZING STUFF! Review: Good concrete stain removal product - It really works. I did have to do multiple treatments (3x) with a little scrubbing (with metal scrub) but the stain came off. It doesn’t seem to have very strong odor, pretty easy to use except for how expensive it is for one time use cause I ended up using the whole gallon. But I think it’s worth it. ## Features - Quantity and Mixing Instructions: One gallon of F9 BARC concentrate makes 1.5 to 3 gallons of cleaner. Always mix F9 with only clean water before application. - Usage and Coverage: One gallon of F9 Concrete Rust Remover covers 400-800 square feet of concrete. - Safety and Application: Safe for use on concrete, bricks, pavers, tile, asphalt, and concrete coatings. Do not use on glass. - Features and Benefits: Biodegradable, non-abrasive, non-flammable, and safer than hydrochloric acid. Quickly removes orange battery acid burn, rust, and fertilizer stains. - Features and Benefits: Restores concrete to its natural bright gray color without losing strength over time. Does not require mixing, brushing, or messy pastes.Does not require mixing, brushing, or messy pastes. ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #32,873 in Automotive ( See Top 100 in Automotive ) #131 in Care Corrosion & Rust Inhibitors | | Customer Reviews | 4.3 out of 5 stars 110 Reviews | ## Images ![Generic Front 9 BARC Concrete Rust Remover 1 Gallon - Image 1](https://m.media-amazon.com/images/I/515jsuHI76L.jpg) ![Generic Front 9 BARC Concrete Rust Remover 1 Gallon - Image 2](https://m.media-amazon.com/images/I/51BLDf0aAxL.jpg) ![Generic Front 9 BARC Concrete Rust Remover 1 Gallon - Image 3](https://m.media-amazon.com/images/I/51COpyBfzKL.jpg) ![Generic Front 9 BARC Concrete Rust Remover 1 Gallon - Image 4](https://m.media-amazon.com/images/I/51nyHDo6YxL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Shockingly good stuff! *by K***M on November 8, 2025* When reading product reviews I tend to take with a large grain of salt those that are overly effusive in their praise of the "miraculous / amazing / out of this world" performance. Well, be forewarned, this is one of those review. But I'll back it up. I had an air conditioning condensation drain that clogged, resulting in the overflow drain pan constantly being full. Over time that pan rusted, and the drain for the pan dropped out over a small roof section over my garage. Over the months (years?) that left a nasty rust stain on my asphalt shingles. No damage to the shingles, just unsightly. I tried to clean the stain by hand with CLR (nothing), and even tried pressure washing it . . . carefully (I know, not a great idea . . . and it didn't work). So I started searching around the internet looking for something. I eventually ran across a video where the user praised the amazing job this BARC product did. Out of other ideas, I spent the money for a gallon (at $60 or so I sure HOPED it would work), and gave it a try. And the result is just amazing. I poured the BARC into a spray bottle and got to work spraying the stained area. The rust stain pretty much dissolved before my eyes. I stopped halfway to admire the change, and though the shingles were wet I could clearly see the red had disappeared (check out the picture). Well, I finished up the affected area and let it marinate for a half hour or so just to make sure it had enough time to do its thing, and then went back up and rinsed it off. In short, the stain was GONE! There are no noxious fumes, and my fingers didn't smoke and dissolve when I got a bit of it on me. IT JUST WORKED! I know it's pitched as being for rust stains on concrete (I tried that too and also works there), but it darn sure fixed my shingles stain. And the good news is, I have a lot left over for future cleanups. AMAZING STUFF! ### ⭐⭐⭐⭐⭐ Good concrete stain removal product *by T***E on April 22, 2026* It really works. I did have to do multiple treatments (3x) with a little scrubbing (with metal scrub) but the stain came off. It doesn’t seem to have very strong odor, pretty easy to use except for how expensive it is for one time use cause I ended up using the whole gallon. But I think it’s worth it. ### ⭐⭐⭐⭐⭐ Great products for pavers! *by P***S on March 29, 2026* This product is AMAZING! This is only an after picture. I cleaned my golf cart batteries and it left lots of rust. Power washed as directed, let it dry, put the solution in a spray bottle and WOW! Works fast. ## Frequently Bought Together - Generic Front 9 BARC Concrete Rust Remover 1 Gallon - Front 9 Restoration F9 Efflorescence, Hard Water Stains and Calcium Remover - Perfect for Mud and Copper Stains and Concrete Coating Prep - 1 Gallon --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/631451134-generic-front-9-barc-concrete-rust-remover-1-gallon](https://www.desertcart.jp/products/631451134-generic-front-9-barc-concrete-rust-remover-1-gallon) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-11*