CLR Calcium Limescale & Rust – Ready to Use 400ml
Need to tackle tough calcium and limescale deposits as well as surface rust stains?
- Comes in Ready to Use Spray bottle that does not require mixing. Perfect for those who do not need to control the dilution – for quick and easy cleans
- Great for vertical surfaces such as windows, balustrades and glass pool fences
- CLR is a powerful solution that removes Calcium & Limescale build-up, Rust, Salt, Mineral Deposits, Oxidation, Algae, Fibreglass/Gel coat yellowing and Soap Scum
- Industrial Strength formulation yet versatile, suitable for a range of surfaces and usages
- CLR is Non-Toxic and Non-Abrasive, safe to use on delicate surfaces
- Safe for user, CLR is made from lactic acid derived from plants
- Biodegradable
- EPA Certified Safer Choice
- Antibacterial, Kills 99.9% of Germs
| Lactic acid | functions as a chelating agent; a compound that makes metals more soluble in water |
| Gluconic acid | functions as a chelating agent; a compound that makes metals more soluble in water |
CLR® Calcium Limescale & Rust – Ready to Use Spray quickly dissolves calcium, limescale and rust build-up from common household surfaces.
Suitable Surfaces
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Glass Pool Fences
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Glass Balustrades
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Shower Screens
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Windows ( Without Synthethic Coating)
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Rusty BBQs
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Uncoloured Bricks
Always test on a small, inconspicuous area first.
General Cleaning Instructions
- Rotate nozzle to ON position.
- Spray CLR® 15-20cm from surface to be cleaned.
- Allow the CLR® to sit on the surface for 2 minutes. Scrub surface with a damp sponge, cloth or brush.
- Rise surface thoroughly with cold, clean water. Avoid prolonged contact with any surface.
For Heavy Build-Up
For heavily embedded stains, apply CLR on sain for up to 5 times, never leaving the product on for more than 2 minutes.
Important Safety Information
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Do not use on natural stone (marble, limestone, travertine), terrazzo, coloured grout, aluminium, brass, copper, or damaged surfaces.
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Do not mix with bleach or other cleaning products.
- Do not mix with chlorine.
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Avoid prolonged contact on metal surfaces.
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Use in a well-ventilated area.
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Keep out of reach of children.
ALSO AVAILABLE IN
STOCKISTS
Disclaimer: This product may not be stocked in every store.
CLR Calcium, Limescale & Rust Remover – Ready to Use (400ml) is a powerful antibacterial cleaner that removes calcium, limescale, and surface rust, as well as salt, mineral deposits, oxidation, algae, fibreglass/gel coat yellowing, and soap scum. It is suitable for use on a variety of surfaces.
The ready-to-use spray is ideal for quick, easy cleaning on vertical and hard to reach surfaces such as windows, balustrades, and glass pool fences.
Part of the EPA’s Safer Choice Program, CLR is recognised as a safer alternative to harsh chemicals. The septic-safe, biodegradable formula contains no phosphates.
Always spot test on an inconspicuous area before cleaning.
SUITABILITY
CLR Calcium Limescale & Rust – Ready to Use 400ml
Disclaimer: Always check whether CLR is suitable on the material of the item you are trying to clean. Test first in a small inconspicuous spot before applying to a greater area.
Click on the buttons below to understand about the product suitability.
Not suitable for
Safer Choice

Finding cleaning and other products that are safer for you, your family, and the environment should be easy — that’s why the U.S. EPA developed a Safer Choice label. We all play a role in protecting our families’ health and the environment. Products with the Safer Choice label help consumers and commercial buyers identify products with safer chemical ingredients, without sacrificing quality or performance.
CLR and CLR Bathroom and Kitchen all wear the Safer Choice label to communicate that the product’s formula contain ingredients with more positive human health and environmental characteristics than conventional products of the same type. They are also biodegradable.
Frequently asked questions
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Yes — CLR’s effectiveness can diminish over time. How it’s stored (e.g., heat or direct sunlight) can accelerate this. CLR typically becomes less effective after 3 years from the production date.
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No — CLR can remove seal finishes and compromise the surface of natural and synthetic marble. If spilled, consult a marble professional for further instructions.
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No — CLR is not recommended on pool tiles as it can remove the finish and pose a hazard if it contacts chlorine.
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No. CLR should not be used on or in any materials associated with a swimming pool. CLR should never come into contact with chlorine as it can create dangerous toxic fumes. Consult a pool maintenance expert for safe alternatives.
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Yes. By the time CLR reaches the septic system it is neutralised with water and is septic safe.
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No — CLR is not recommended for removing oil. If CLR mixes with oil, it can darken the concrete. For oil removal, a dedicated product like CLR Oil & Grease Remover is advised.
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Do not use CLR on any natural stone or marble (including cultured marble), terrazzo, coloured grout (any colour other than white), painted, coated, sealed or metallic glazed surfaces, plastics (food grade or soft), laminates, Formica, slate, titanium, rubber, aluminium, galvanised metals, nickel, oil-rubbed bronze, brass, copper, steam irons, leaded crystal, refinished tubs or any damaged or cracked surface. CLR may etch older sinks, tubs and tiles. Avoid contact with wood, clothing, wallpaper and carpeting. Always spot test first on an inconspicuous area.
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CLR can remove the finish off brass, aluminium and copper, and can also pit certain grades.
Where to Buy CLR in Australia
CLR® cleaning solutions are trusted by homeowners and professionals alike for tackling tough calcium, limescale, rust and grime that ordinary cleaners can’t. You don’t need to search far — CLR is stocked by major retailers right across Australia, making it easy to pick up the right product when and where you need it.
Whether you prefer shopping in-store or online, you can find CLR products on the shelves at:
- Major supermarkets such as Coles, Woolworths & IGA.
- Hardware and outdoor stores like Bunnings and Mitre 10, Home Hardware & BCF.







