Critical - which surfaces is this NOT for?

NOT for marble, limestone, or travertine - acid will etch these. Use only on non-acid-sensitive surfaces: granite, slate, basalt, brick, ceramic, porcelain tile, and terracotta.

Efflorescence, rust, limescale, grout haze, mortar mess, fireplace soot. The fast-acting acidic formula penetrates deep into porous materials to lift stubborn stains.

Efflorescence/rust/soot: 0.5 quart per 10L water. Grout haze/limescale/soap scum: 0.25 quart per 10L. Mortar mess: 1 quart per 10L. One quart makes approximately 4 gallons of working solution.

Pour, brush, or spray onto pre-wetted surface. Allow up to 3 minutes dwell, agitate with a white nylon pad, then rinse thoroughly with clean water.

DANGER - corrosive to aluminium, causes skin irritation and serious eye damage. Wear gloves and eye protection. Safer than muriatic or phosphoric acid (non-fuming) but still requires PPE.

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Dry-Treat Acid Cleaner 946mL

Name: Dry-Treat Acid Cleaner 946mL
Brand: Stain Proof
SKU: DDRS90
Price: 32.95 AUD
Availability: InStock

$32.95

or 4 interest-free payments with

DryTreat Acid Cleaner is a powerful and effective cleaning solution designed to tackle tough stains, mineral deposits, and efflorescence. Formulated with advanced technology, this acid-based cleaner offers superior performance for a range of surfaces. Its fast-acting formula penetrates deep into porous materials, lifting and removing stubborn stains without causing damage. With its high concentration and versatility, DryTreat Acid Cleaner provides a reliable solution for both residential and commercial cleaning needs. Experience the power of professional-grade cleaning with DryTreat Acid Cleaner.

Removes efflorescence, grout haze, rust marks, limescale, soap scum and mortar residue

Non-fuming - safer to use than traditional industrial acids such as muriatic and phosphoric

Super concentrated - 1 quart makes approximately 4 gallons of efflorescence remover

Quantity: 1

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Pickup available at The Waterproofing Shop

Usually ready in 24 hours

Dry-Treat Acid Cleaner 946mL

The Waterproofing Shop

Pickup available, usually ready in 24 hours

22/872 Canterbury Road
Roselands NSW 2196
Australia

+61280213517

How to Use

Pre-wet the surface, then pour, brush or spray the diluted solution generously and leave for up to 3 minutes before scrubbing and rinsingTest the product on a small area to check acid sensitivity before full application
If satisfied with the test results, first sweep or vacuum all loose dust and dirt from the surface
Confirm the surface temperature is between 5C and 35C
Pre-wet the surface with water
Dilute into a 10 L bucket three quarters filled with clean water: 1/2 quart for efflorescence, rust marks and fireplace soot, 1/4 quart for grout haze, limescale and soap scum, 1 quart for mortar mess
Pour, brush or spray the mixed solution generously onto the wetted surface and leave for up to 3 minutes
Do not allow the solution to dry on the surface, and clean large areas in sections
Rub with a white nylon scrub pad, or similar, to clean the surface
Add more Acidic Cleaner if needed
Neutralise the acid by dissolving 1 cup of STAIN-PROOF Alkaline Cleaner, or another pH base cleaner, into a bucket of fresh water and pour it over the surface
Let the neutralising solution sit for approximately 3 minutes
Rinse the surface thoroughly several times with clean water using a mop or wet vacuum

Technical Specifications

Product Type: Acidic cleaner concentrate
Chemical Base: Urea hydrochloride
VOC Content: Less than 5 g/L (calculated)
Concentrate Yield: 1 quart makes approximately 4 gallons of efflorescence remover
Dilution Basis: 10 L bucket three quarters filled with clean water
Dilution for Efflorescence, Rust Marks and Fireplace Soot: 1/2 quart
Dilution for Grout Haze, Limescale and Soap Scum: 1/4 quart
Dilution for Mortar Mess: 1 quart
Application Temperature: 5-35C surface temperature
Dwell Time: Up to 3 minutes; do not allow the solution to dry on the surface
Agitation: White nylon scrub pad or similar
Neutralising Step: 1 cup of STAIN-PROOF Alkaline Cleaner or other pH base cleaner in a bucket of fresh water, left approximately 3 minutes
Rinse: Rinse thoroughly several times with clean water using a mop or wet vacuum
Pack Size: 32 fl oz / 0.95 L (part 141912)
Storage: Store in a well ventilated place, keep cool, do not freeze
Hazard Classification: DANGER - may be corrosive to metals (aluminium), causes skin irritation, causes serious eye damage, may cause respiratory irritation
Transport Classification: IATA and IMDG UN3265, Corrosive liquid, acidic, organic, n.o.s. (Urea Hydrochloride), 8, III; not regulated for road transport
Country of Manufacture: Made in the USA with globally sourced materials
Source Document: Product Specification Sheet Rev. 10.20

Product Files

Technical Data Sheet (TDS) PDF Download

Dry-Treat Acid Cleaner 946mL

$32.95

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Technical overview

STAIN-PROOF Acidic Cleaner, previously known as EFF-ERAYZA, is a urea hydrochloride based acidic cleaning concentrate for non-acid sensitive stone and other hard surfaces. It removes efflorescence, grout haze, rust marks, limescale, soap scum, fireplace soot and mortar residue, and it is non-fuming, so it is safer to use than traditional industrial acids such as muriatic and phosphoric. It is diluted into a 10 L bucket of clean water at 1/4 to 1 quart depending on the contamination, applied to a pre-wetted surface for up to 3 minutes, scrubbed, neutralised with an alkaline cleaner and rinsed off. It is a chemical, not a coating, so no film thickness applies. No Australian Standard and no accredited test certificate is cited on the Product Specification Sheet.

View full technical data sheet

Key applications

Efflorescence removal from non-acid sensitive stones, pavers, tiles, bricks and masonry
Grout haze removal
Rust mark and rust stain removal
Limescale and hard water deposit removal
Soap scum removal
Fireplace soot removal
Mortar mess and mortar residue removal
Indoor and outdoor floors, walls, facades and showers
Chemical etching of acid sensitive surfaces for added traction

Surface suitability

Non-acid sensitive stone, including granite, slate and basalt
Brick and brickwork (non-acid sensitive)
Ceramic and porcelain tile
Terracotta
Pavers (non-acid sensitive)
Masonry (non-acid sensitive)
Indoor and outdoor floors, walls, facades and showers

Test the product on a small area to check acid sensitivity before full application. For non-acid sensitive stones, pavers, tiles, bricks and masonry only - the product chemically etches acid sensitive surfaces. Apply only when the surface temperature is between 5C and 35C. Pre-wet the surface, do not allow the solution to dry on the surface, and clean large areas in sections. Always neutralise the acid afterwards by dissolving 1 cup of STAIN-PROOF Alkaline Cleaner or another pH base cleaner into a bucket of fresh water, leaving it approximately 3 minutes, then rinse thoroughly several times with clean water. DANGER: may be corrosive to metals (aluminium), causes skin irritation, causes serious eye damage, may cause respiratory irritation. Keep out of reach of children.

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Technical Specifications

Product Type	Acidic cleaner concentrate
Chemical Base	Urea hydrochloride
VOC Content	Less than 5 g/L (calculated)
Concentrate Yield	1 quart makes approximately 4 gallons of efflorescence remover
Dilution Basis	10 L bucket three quarters filled with clean water
Dilution for Efflorescence, Rust Marks and Fireplace Soot	1/2 quart
Dilution for Grout Haze, Limescale and Soap Scum	1/4 quart
Dilution for Mortar Mess	1 quart
Application Temperature	5-35C surface temperature
Dwell Time	Up to 3 minutes; do not allow the solution to dry on the surface
Agitation	White nylon scrub pad or similar
Neutralising Step	1 cup of STAIN-PROOF Alkaline Cleaner or other pH base cleaner in a bucket of fresh water, left approximately 3 minutes
Rinse	Rinse thoroughly several times with clean water using a mop or wet vacuum
Pack Size	32 fl oz / 0.95 L (part 141912)
Storage	Store in a well ventilated place, keep cool, do not freeze
Hazard Classification	DANGER - may be corrosive to metals (aluminium), causes skin irritation, causes serious eye damage, may cause respiratory irritation
Transport Classification	IATA and IMDG UN3265, Corrosive liquid, acidic, organic, n.o.s. (Urea Hydrochloride), 8, III; not regulated for road transport
Country of Manufacture	Made in the USA with globally sourced materials
Source Document	Product Specification Sheet Rev. 10.20

Frequently asked questions

View all FAQs

Critical - which surfaces is this NOT for?

Compatibility
NOT for marble, limestone, or travertine - acid will etch these. Use only on non-acid-sensitive surfaces: granite, slate, basalt, brick, ceramic, porcelain tile, and terracotta.
What does it remove?

Performance
Efflorescence, rust, limescale, grout haze, mortar mess, fireplace soot. The fast-acting acidic formula penetrates deep into porous materials to lift stubborn stains.
How is it diluted?

Installation
Efflorescence/rust/soot: 0.5 quart per 10L water. Grout haze/limescale/soap scum: 0.25 quart per 10L. Mortar mess: 1 quart per 10L. One quart makes approximately 4 gallons of working solution.
How is it applied?

Compatibility
Pour, brush, or spray onto pre-wetted surface. Allow up to 3 minutes dwell, agitate with a white nylon pad, then rinse thoroughly with clean water.
Safety?

Compliance
DANGER - corrosive to aluminium, causes skin irritation and serious eye damage. Wear gloves and eye protection. Safer than muriatic or phosphoric acid (non-fuming) but still requires PPE.

Why trade professionals choose Stain Proof

Stain Proof, also sold under the Dry Treat name, is a stone and masonry protection range built around impregnating sealers that soak into the surface instead of forming a film over it. The line covers solvent carried and waterborne sealers for natural stone, porcelain, quartz, pavers, concrete and grout, plus colour enhancing options and the acid, alkaline and daily cleaners used to prepare and maintain sealed surfaces. Supplied to the Australian trade through The Waterproofing Shop, including seal, clean and maintain packs that cover a whole job in one order.

Shop all Stain Proof