Q: My concrete sidewalk and driveway have large brown rust stains that I haven’t been able to remove. I tried bleach and a chemical remover to no avail. Can you help? A: Rust stains on concrete seem ...

Q: How can I remove a battery-acid stain from a concrete garage floor? It was caused by a golf cart. A: Because acids attack concrete, the affected area may be darker and altered in texture, and that ...

There seems to be a limitless number of products available to clean, strip, etch, degrease, and brighten various surfaces around the home, yard, and workshop. And while most of these sprays, powders, ...