Problem: Rust
Solution: F9 BARC 
This product works great for removing rust stains on various surfaces such as concrete, brick, stone and much more. F9 BARC removes orange acid burn from batteries, fertilizer stains and precipitation stains transferred from rusty metals. F9 BARC is an easy to use product, just add water to the chemical and apply with a pump sprayer, or the ProTool Chem sprayer for larger applications, let it sit then rinse off.
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