STAIN-PROOF Acidic Cleaner, formerly Eff-Erayza, is a new-technology safe acid cleaner that removes efflorescence, rust stains, limescale, grout haze, mortar mess and fireplace soot from non-acid-sensitive stone and hard surfaces. It is generally more effective than traditional industrial acids, yet produces no noxious fumes so it can be used indoors and outdoors, is non-corrosive to metals (except uncoated aluminum), and temporary skin contact does not burn. Highly concentrated — one quart makes up to about 4 gallons of working solution.
| Property | Detail |
|---|---|
| Brand | Dry-Treat / STAIN-PROOF |
| Product | Acidic Cleaner (formerly Eff-Erayza) |
| Size | 1 Quart (32 fl oz / 0.95 L) |
| Vendor / Mfr Number | 141912 |
| Type | Concentrated safe-acid cleaner |
| pH | Acidic |
| Dilution (concentrate) | 1 quart makes up to ~4 gallons of working solution |
| Dilution for rust marks | 1/2 quart per 2.5-gallon (≈9.5 L) bucket, about 3/4 filled with clean water |
| Removes | Efflorescence, rust stains, limescale, grout haze, mortar mess, fireplace soot |
| Suitable surfaces | Granite, slate, basalt, brick, glass, ceramic and porcelain tile, terracotta |
| Not for (acid-sensitive) | Marble, limestone, travertine, onyx, concrete/grout, uncoated aluminum |
| Fumes | No noxious fumes — indoor and outdoor use |
| Metal safety | Non-corrosive to metals except uncoated aluminum |
| Use environment | Interior and exterior; residential and commercial |
| Weight | 2.71 lb |
Use on non-acid-sensitive stone and masonry — granite, slate, basalt, brick, glass, ceramic and porcelain tile and terracotta — to remove efflorescence, rust marks, limescale, grout haze, mortar residue and fireplace soot. Dilute per the label for the stain type, apply, agitate and rinse thoroughly. Do NOT use on marble, limestone, travertine, onyx, concrete or grout; when cleaning near concrete, neutralize promptly with an alkaline cleaner and rinse with fresh water. Always test a small inconspicuous area first.
Wear appropriate PPE. Follow manufacturer instructions and safety regulations.
