Stain-Proof Eff-Erayza Rust Remover - Safe Acid Stone and Masonry Cleaner - Quart

Stain-Proof Eff-Erayza Rust Remover - Acidic Stone and Masonry Cleaner - Quart

Stain-Proof Eff-Erayza (now sold by Stain-Proof/Dry-Treat as STAIN-PROOF Acidic Cleaner) is a concentrated new-technology acid cleaner for removing efflorescence, rust stains, limescale, hard water deposits, soap scum, grout haze, mortar mess, and fireplace soot from acid-resistant stone and masonry. It is more effective than traditional industrial acids, yet does not produce noxious fumes, is non-corrosive to most metals (except uncoated aluminum), and brief skin contact does not burn. One quart of concentrate makes approximately 4 gallons of working solution.

Safe for use on (acid-resistant surfaces only)

• Granite
• Slate
• Basalt
• Brick and masonry
• Ceramic and porcelain tile
• Terracotta

WARNING - DO NOT USE ON ACID-SENSITIVE SURFACES

This is an acid-based cleaner. It will chemically etch and permanently damage acid-sensitive stone. Do NOT use on:

• Marble
• Limestone
• Travertine
• Onyx and other calcite-based, acid-sensitive stone
• Uncoated aluminum (corrosive to it)

Typical dilution (per 2.5-gallon bucket of water)

• Efflorescence, rust stains, fireplace soot: 1/2 quart of concentrate
• Grout haze, limescale, hard water deposits, soap scum: 1/4 quart of concentrate
• Mortar mess: 1 quart of concentrate

How to use

• Always test first on a small hidden area to check suitability.
• Pre-wet the surface with clean water.
• Apply the diluted solution generously and allow up to 3 minutes of dwell time.
• Scrub with a nylon pad or stiff nylon brush.
• Neutralize acid residue with an alkaline cleaner, then rinse thoroughly with clean water.

DANGER: May be corrosive to metals (aluminum). Causes skin irritation. Causes serious eye damage. Wear appropriate PPE (chemical-resistant gloves and eye protection) and follow the Safety Data Sheet and label directions.