Free UPS Ground Shipping on orders over $250

Stain-Proof Acidic Cleaner, Quart

In Stock
Can’t find what you’re looking for? Item out of stock? Call us at 1-800-458-6222 for assistance.

Product Overview

STAIN-PROOF® Acidic Cleaner, formerly known as EFF-ERAYZA™, is a new technology acid cleaner for removing efflorescence, rust stains, limescale, grout haze, mortar mess and fireplace soot. Acidic Cleaner is very powerful and generally more effective to use than traditional industrial acids but does not produce noxious fumes, non-corrosive to metals (except for uncoated aluminum) and temporary contact does not burn skin.


  • Highly effective for removing common mineral residues including: efflorescence, grout haze, rust marks, soap scum, limescale and mortar mess
  • Acidic Cleaner is suitable for a wide range of non-acid sensitive stones and other hard surfaces, including, granite, slate, basalt, brick, glass, ceramic and porcelain tile, terracotta
  • Acidic cleaners are commonly used to clean paving & poured concrete surfaces. If using Acidic Cleaner on concrete or other cementitious surfaces, neutralize the surface as soon as possible after cleaning to minimize etching, with something alkaline, such as STAIN-PROOF Alkaline Cleaner, formerly known as Oxy-Klenza™, dissolved in water, then rinse thoroughly with fresh water
  • Acidic Cleaner does not produce noxious fumes so it can be used indoors and outdoors

Features & Specifications

Application Cleaner
PH Acid
Interior/Exterior Interior, Exterior
Product Size 1 Quart
Surfaces Non-Polished Acid Resistant Stone

Health & Safety Information

P65 Warning


This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information: