Diamond Sponges pack a punch. Dampen with Universal Cleaner, scrub in circles, then wipe clean. Handle with care on delicate surfaces! 💪✨

<p><img src="https://attachments.gorgias.help/uploads.gorgias.io/VvEzB7Nmvd2beky0/diamond-sponge-a9e38a14-5d75-448e-960d-79a0d2b99985.gif" style="width: 300px;" class="fr-fic fr-dib"></p><p><br><a href="https://koh.com/products/diamond-sponges" rel="noopener noreferrer" target="_blank">Diamond Sponges</a> are a powerful abrasive tool and should be handled with care.&#xA0;</p><p><strong>How to use:&#xA0;</strong></p><ol><li>Dampen sponge by spraying Koh Universal Cleaner directly onto sponge.</li><li>Apply to target area and gently begin to rub in a circular fashion.</li><li>Combine this with Koh Universal Cleaner to the surface where required.</li><li>Wipe residue away using Koh Universal Cloth.</li><li>Repeat as required&#xA0;</li></ol><p><strong>Caution:&#xA0;</strong>Avoid using on surfaces that are susceptible to abrasive tools - including plastic, chrome, stainless steel and some types of glass. Always spot test first and avoid rubbing vigorously</p><p><span class="fr-video fr-deletable fr-rv fr-fvc fr-dvb fr-draggable" contenteditable="false" draggable="true"><iframe width="100%" src="https://player.vimeo.com/video/402007879" frameborder="0" allowfullscreen class="fr-draggable"></iframe></span><br></p>

How to use: Diamond Sponges

💪 PU foam and silica grit. Reuse if you can, bin when worn out.

<p><strong>TL;DR</strong><br>High-density PU foam and silica-alumina coating. Not recyclable in most kerbside bins. Reuse for dirty tasks, then place in general waste.</p><hr><h2 id="material-breakdown">Material breakdown</h2><ul><li><strong>Core:</strong> High-density PU foam block</li><li><strong>Coating:</strong> Silica-alumina abrasive film (the &#x201C;diamond&#x201D; grit)</li></ul><h2 id="why-it-cant-go-in-the-recycling">Why it can&#x2019;t go in the recycling</h2><p>The bonded abrasive film can&#x2019;t be separated from the foam at standard facilities, and mixed materials are rejected by most recycling streams.</p><h2 id="best-end-of-life-options">Best end-of-life options</h2><ul><li><strong>Reuse:</strong> Downgrade a worn sponge to outdoor grills, tools or garden pots.</li><li><strong>Dispose:</strong> When the coating is smooth or the block is crumbly, place it in household rubbish.</li></ul>

What is Diamond Sponge made of and how do I dispose of it?

🧼 Rinse, gently squeeze, air-dry. Care tips to keep Diamond Sponge scrubbing for weeks.

<p><strong>TL;DR</strong><br>With rinse-and-dry care, expect multiple weeks of use. Replace when the abrasive surface goes smooth or the sponge starts to shred.</p><hr><h2 id="typical-lifespan">Typical lifespan</h2><p>The silica-alumina coating and high-density PU core give extended scrubbing power. Longevity depends on how rough the surface is and how firmly you press, but most users report<strong>&#xA0;</strong>several weeks of oven or tile scrubbing before needing a new block.</p><h2 id="care-tips-to-stretch-its-life">Care tips to stretch its life</h2><ol><li>Rinse thoroughly after every session, warm water preferred.</li><li>Gently squeeze out water (don&#x2019;t twist or wring).</li><li>Air-dry completely in a cool, ventilated spot.</li><li>Avoid harsh chemicals or high heat, they will degrade the coating.</li></ol>

How long will Diamond Sponge last?

🧱 Tough on ovens & grout. Skip glass, chrome and soft plastics, etc.

<p><strong>TL;DR</strong><br>Great on tough, hard surfaces; avoid anything easily scratched.</p><hr><h2 id="safe-targets">Safe targets</h2><ul><li>Oven walls, racks and trays</li><li>Cooktop trivets &amp; burner caps</li><li>Tile grout, stone pavers, brick BBQ surrounds</li><li>Heavily stained pots, cast-iron or steel grates</li></ul><h2 id="use-with-caution--spot-test-first">Use with caution / spot-test first</h2><ul><li>Hard-anodised cookware</li><li>Unglazed ceramics or matte stone</li></ul><h2 id="surfaces-to-avoid">Surfaces to avoid</h2><ul><li>Glass, mirrors, ceramic hobs</li><li>Chrome, polished stainless steel, copper &amp; brass</li><li>Plastic, acrylic or fibreglass (e.g., some bath tubs)</li></ul><p class="footnote">Always spot-test in an inconspicuous area if you&#x2019;re unsure.</p>

What surfaces are safe for a Diamond Sponge?

We're always here via email, care.au@cx.koh.com or fill out the form and we'll be in touch as soon as possible. Our support hours are 9am - 5:00pm AEST Monday to Friday.

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Explore Diamond Sponge's FAQ: step-by-step usage, surface compatibility, cleaning & maintenance tips, longevity advice and sustainable disposal guidance.

Diamond Sponge

Tools & Accessories 🧽

Meet your heavy-duty cleaning sidekick! This Diamond Sponge FAQ covers everything you need. Scrubbing techniques, safe surfaces (and which to skip),  care tips, lifespan expectations, and disposal.

What are the ingredients of Universal Cleaner?

Why do you sell the Universal Cleaner in bulk?

Does Universal Cleaner contain palm oil?

Is Universal Cleaner septic safe?

What can I use Universal Cleaner for?

How does Universal Cleaner work?

Is Universal Cleaner chemical free

Does the Universal Cleaner kill bacteria and germs?

Do I need to do a spot test with Universal Cleaner?

What can't you use Universal Cleaner on?

How long does Universal Cleaner last?

What surfaces should I not use Universal Cleaner on?

Is there a use by date for Universal Cleaner?

Is Universal Cleaner safe to use on chopping boards?

Is Universal Cleaner fragrance-free?

What Certifications does the Universal Cleaner have?

Is Universal Cleaner allergy friendly?

Is Universal Cleaner pet-friendly?

Is Universal Cleaner asthma friendly?

Is Universal Cleaner being replaced?

Universal Cleaner

What Happened to Protect Surface Sanitiser?

How long will 1L of Protect Surface last?

How does Protect Surface Sanitiser work?

What surfaces can I use Protect Surface Sanitiser on?

Where is Protect Surface Sanitiser made?

Can I use Protect Surface Sanitiser on my hands?

Where can I use Protect Surface Sanitiser?

Is Protect Surface Sanitiser safe to use on fabric?

Is Protect Surface Sanitiser safe for septic systems?

Can I use Protect Surface Sanitiser in my Spray Mop?

What are the ingredients of Protect Surface Sanitiser?

What type of bacteria does Protect Surface Sanitiser kill?

Is Protect Surface Sanitiser food safe?

Is Protect Surface Sanitiser safe to use around pets?

Is Protect Surface Sanitiser Chemical Free?

Is Protect Surface Sanitiser eco-friendly?

How did you test the effectiveness of Protect Surface Sanitiser?

Can I mix Universal Cleaner and Protect Surface Sanitiser?

Protect Surface Sanitiser: My surface is still wet even after waiting a few minutes.

Does Protect Surface Sanitiser contain alcohol?

Protect Surface Sanitiser

Surface products 🪞

Are Koh Loo Cleaner Tablets safe for septic environments?

Using our new Loo Cleaning Tablets

Do Loo Cleaner Tablets have a fragrance?

Should I remove the wrapper on the Loo Tablet?

What are the ingredients of the Loo Cleaner Tabs?

Loo Cleaner Tabs

What are the ingredients of Bathroom & Shower Cleaner?

How do I use Bathroom & Shower Cleaner?

Are there any surfaces I should avoid cleaning with Bathroom & Shower Cleaner?

Is it allergy / asthma / sensitive skin friendly?

Is it only for use in the bathroom and shower or can I use it elsewhere?

Does Bathroom & Shower Cleaner have a fragrance?

Can I use it to clean EnduroShield or similar coated shower screens?

Is Bathroom & Shower Cleaner safe to use around pets?

Is Bathroom & Shower Cleaner septic safe?

Can I use Bathroom & Shower Cleaner with a Diamond Sponge?

What makes it "eco friendly"?

Can I use Bathroom & Shower Cleaner to clean the bowl of the toilet?

How Much Bathroom & Shower Foam Should I Use?

Universal Cleaner vs. Bathroom & Shower Cleaner: What’s the Difference?

Bathroom & Shower Cleaner

Bathroom products 🚿

Are the Dishwashing Tablets septic safe?

What are the ingredients of Dishwashing Tablets?

Are Koh tablet products free from plastic?

Dishwashing Tablets

Does Koh Dishwashing Liquid kill bacteria?

Where is Dishwashing Liquid made?

Can I use Koh Dishwashing Liquid around grey water / bio-cycle / septic tank environments?

What are the Ingredients of Dishwashing Liquid?

Does Dishwashing Liquid have any fumes or fragrances?

Dishwashing Liquid

Is this the same as Universal Dish Spray?

Does it work on burnt-on grease and oven grime?

What’s the difference between this and the Universal Cleaner?

Can I use it around food?

Is it really non-toxic?

Will it dry out my hands like other degreasers?

Do I need to use the Koh Foaming Spray Bottle?

Can I use it on stainless steel?

Does it contain palm oil?

Do I need to rinse it off?

Is it fragrance free?

Can I use it on non-stick cookware?

What should I use to wipe it off?

Is this a multipurpose cleaner?

Can I use it in the microwave or on appliances?

Why does this product exist when I already have Universal Cleaner?

What’s the actual science-y stuff that makes it work?

How does this fit into the Koh system?

What’s in it? (AKA, the ingredients list)

How exactly do I use it?

Kitchen Grease & Oil Cleaner

What happened to Universal Dish Spray? And what should I use now?

Universal Dish Spray

Kitchen products 🍽️

Can I find Sensitive Laundry Liquid in trial or sample size?

How is the quality and consistency of Koh Sensitive Laundry Liquid ensured?

Where is Sensitive Laundry Liquid manufactured?

What kind of research and development went into creating Sensitive Laundry Liquid?

​How many loads are there in a 1.6L Box of Koh Sensitive Laundry Liquid?

Why/how does Koh Sensitive Laundry Liquid work as a stain pre-treater?

How does Sensitive Laundry Liquid extend the life of fabrics?

How does Koh Sensitive Laundry Liquid make natural fibres feel softer without fabric softener?

How does Sensitive Laundry Liquid help keep clothes whiter and brighter for longer?

Does Sensitive Laundry Liquid contain any fragrances?

Does Sensitive Laundry Liquid deodorise fabrics?

What is Sensitive Laundry Liquid?

What are the ingredients in Sensitive Laundry Liquid?

How can Sensitive Laundry Liquid save me money?

How is Sensitive Laundry Liquid eco-friendly?

Can I use Koh Sensitive Laundry Liquid in my auto-dosing machine?

Where should I store Sensitive Laundry Liquid?

How is Koh Sensitive Laundry Liquid different from other eco-friendly detergents on the market?

Is Koh Sensitive Laundry Liquid suitable for septic / grey water systems?

Can I use Koh Sensitive Laundry as a stain pre-treater?

Can I use Koh Sensitive Laundry for hand washing delicate garments?

Can I use Koh Sensitive Laundry for sportswear and synthetic garments?

Is Koh Sensitive Laundry Liquid safe to use this detergent on silk or wool garments?

Does Koh Sensitive Laundry work in front and top loading machines?

What temperature washes can Koh Sensitive Laundry Liquid be used for? (cold / hot washes)

Can I pre-wash soak with Koh Sensitive Laundry Liquid for heavier soiled loads?

How does the eco-certified formula of Koh Sensitive Laundry Liquid benefit the environment?

Do I still need to use a bleach whitening detergent with Koh Sensitive Laundry Liquid?