Septic system? Sorted. These tablets are tough on grime, gentle on your pipes 💪💚

<p>Yes, <a href="https://koh.com/products/dishwashing-tablets" rel="noopener noreferrer" target="_blank"><strong>Dishwashing Tablets</strong></a> are septic safe.</p>

Are Dishwashing Tablets septic safe?

What’s in a tab? Only the good stuff! Get the dirt on what makes our Dishwashing Tablets tough on grime, kind to the planet 🌏✨

<p><a href="https://koh.com/products/dishwashing-tablets"><strong>Dishwasher Tablets</strong></a> combine oxygen bleach, enzymes, and water-softeners for spotless dishes, every time. &#x1F680;&#x1F37D;&#xFE0F;</p><table style="width:100%; border-collapse:collapse;"><thead><tr><th style="text-align:left; padding:8px; font-size:16px; border-bottom:2px solid #ddd;">Ingredient</th><th style="text-align:left; padding:8px; font-size:16px; border-bottom:2px solid #ddd;">What it does</th></tr></thead><tbody><tr><td style="padding:8px; font-size:16px;"><strong>Sodium Sulfate</strong></td><td style="padding:8px; font-size:16px;">Filler &amp; stabilizer; maintains tablet shape for even, consistent dissolution and prevents clumping.</td></tr><tr><td style="padding:8px; font-size:16px;"><strong>Sodium Citrate</strong></td><td style="padding:8px; font-size:16px;">Water softener &amp; pH regulator; binds hard-water minerals, prevents limescale and keeps dishes spot-free.</td></tr><tr><td style="padding:8px; font-size:16px;"><strong>Sodium Carbonate</strong></td><td style="padding:8px; font-size:16px;">Water softener &amp; alkaline booster; raises pH, binds calcium/magnesium and enhances grease removal.</td></tr><tr><td style="padding:8px; font-size:16px;"><strong>Sodium Percarbonate</strong></td><td style="padding:8px; font-size:16px;">Oxygen bleach; releases hydrogen peroxide to whiten, remove stains and disinfect.</td></tr><tr><td style="padding:8px; font-size:16px;"><strong>Sodium Silicate</strong></td><td style="padding:8px; font-size:16px;">Corrosion inhibitor &amp; water softener; protects dishwasher parts, prevents limescale and stabilizes cleaning agents.</td></tr><tr><td style="padding:8px; font-size:16px;"><strong>Citric Acid</strong></td><td style="padding:8px; font-size:16px;">Descaler &amp; pH adjuster; dissolves mineral deposits, boosts stain removal and stops streaking.</td></tr><tr><td style="padding:8px; font-size:16px;"><strong>Tetra Acetyl Ethylene Diamine<br></strong></td><td style="padding:8px; font-size:16px;">Bleach activator; enhances oxygen-bleach performance for tougher stain removal, even in cool washes.</td></tr><tr><td style="padding:8px; font-size:16px;"><strong>Polycarboxylates</strong></td><td style="padding:8px; font-size:16px;">Dispersant &amp; water softener; keeps soils suspended, prevents redeposition and mineral build-up.</td></tr><tr><td style="padding:8px; font-size:16px;"><strong>Amylase</strong></td><td style="padding:8px; font-size:16px;">Amylase enzyme; breaks down starches from pasta, rice &amp; sauces so they wash away cleanly.</td></tr><tr><td style="padding:8px; font-size:16px;"><strong>Protease</strong></td><td style="padding:8px; font-size:16px;">Protease enzyme; cuts through protein-based food stains for a thorough, odor-free clean.</td></tr></tbody></table><p style="margin-top:16px; font-size:16px;"><br><strong>SDS:</strong> <a href="https://cdn.shopify.com/s/files/1/1074/1454/files/Koh_Dishwashing_Tablets_SDS.pdf?v=1738815749" target="_blank" rel="noopener">&#xA0;Download the Dishwashing Tablets Safety Data Sheet (PDF)&#xA0;</a></p>

What are the ingredients of Dishwashing Tablets?

💧 Keep tablets whole. Place correctly and let the dissolvable film do its job.

<p><strong>TL;DR</strong>: Keep each tablet whole. Cutting upsets the detergent balance. Use the dispenser for normal cycles; lay the whole tab on the tub floor for very short programs. This applies to compact to full-size dishwashers.</p><hr><h2 id="why-you-shouldnt-cut-tablets">Why you shouldn&#x2019;t cut tablets</h2><ul><li>The ingredients pre-measured for one wash.</li><li>Crumbing the tab can leave gritty residue and reduce cleaning power.</li><li>The clear dissolvable film keeps undiluted ingredients off your skin, cutting removes that protection.</li></ul><h2 id="best-placement-by-cycle">Best placement by cycle</h2><table><thead><tr><th>Cycle type</th><th>Where to place the whole tab</th></tr></thead><tbody><tr><td>Normal / Auto</td><td>Inside the detergent dispenser.</td></tr><tr><td>Quick / 30-min</td><td>Flat on the tub floor, centred under the lower spray arm.</td></tr><tr><td>Eco (low-temp)</td><td>Start with dispenser; if residue remains, try tub-floor placement.</td></tr></tbody></table><h2 id="why-the-tablets-are-film-wrapped">Why the tablets are film-wrapped</h2><p>The PVA film stops direct contact with concentrated ingredients, which can irritate sensitive skin before they&#x2019;re diluted in the wash. It also keeps each tab intact until water activates it, no need to peel or unwrap.</p><h2 id="quick-tips-for-spotless-results">Quick tips for spotless results</h2><ol><li>Load dishes so spray arms can reach everything, no nesting bowls.</li><li>Handle tablets with <em>dry</em> hands to avoid premature dissolving.</li><li>Rinse aid might still be needed depending on your area&apos;s water hardness.</li><li>Store the pouch sealed, in a cool, dry place.</li></ol><p class="footnote">If dishes still look cloudy, try a hotter program or move the tab placement before considering any dose changes.</p>

Can I cut Dishwashing Tablets?

💡 Wrapper residue? Try a hotter cycle or place the tab flat on the dishwasher floor.

<article id="faq-pva-wrapper" class="faq-article"><p>Dishwashing Tablets are wrapped in a biodegradable <strong>PVA film</strong> that dissolve during the wash. If you notice bits of film in the filter, try the steps below.</p><h2 id="quick-fixes">Quick fixes</h2><ol><li><strong>Switch placement:</strong>&#xA0;<ul><li><em>Standard / auto program</em>: keep the whole tab in the dispenser.&#xA0;</li><li><em>Short / eco program:</em> lay the whole tab flat on the&#xA0;<em>tub floor</em> under the lower spray arm.<br>Placing it on the floor lets hot water hit the wrapper sooner.</li></ul></li><li><strong>Use a hotter program:</strong> 55 - 65 &#xB0;C cycles give the film more time and heat to dissolve.</li><li><strong>Check water pressure:</strong> Ensure spray arms spin freely and filters are free of debris, good flow helps dissolve tabs fully.</li></ol><h2 id="loading--handling-tips">Loading &amp; handling tips</h2><ul><li>Handle tabs with <em>dry</em> hands so the wrapper stays intact until wash-time.</li><li>Don&#x2019;t peel or cut the wrapper. The film is designed to break down safely in water.</li><li>Avoid stacking large items in front of the dispenser door; the tab must drop freely when the flap opens.</li><li><span style="background-color: initial;">Check the salt reservoir in your dishwasher to see if it needs refilling or if debris needs to be removed.</span></li><li style="font-size: 14px;"><span style="background-color: initial;">The PVA film is septic-safe and will not block drains once fully dissolved.</span></li></ul></article>

Why didn't Dishwashing Tablet wrapper didn’t dissolve

Yes, you can add a light scent. Put 1-2 drops of essential oil on top of the tablet, close the door, run as normal. 🌿

<p><strong>TL;DR:</strong> You can add a light fragrance to a dishwasher cycle, place <strong>1-2 drops</strong> of an essential oil on top of a dishwasher tablet (do <em>not</em> pour oil into the dispenser), close the compartment and run the cycle. &#x1F33F;</p><hr><h2 id="how-to-do-it-quick">How to do it (quick)</h2><ol><li>Load your dishwasher as normal and place the tablet in the detergent compartment.</li><li>Add <strong>1-2 drops</strong> of your chosen Koh essential oil directly onto the top surface of the tablet.</li><li>Close the tablet compartment as normal. Do <em>not</em> pour oil into the dispenser or directly into the machine.</li><li>Run the cycle. Enjoy a subtle scent. Avoid overdoing it (more drops = stronger residue risk).</li></ol><h2 id="safety--best-practice">Safety &amp; best practice</h2><ul><li><strong>Start small:</strong> use 1-2 drops and try one cycle first to check for any smell or residue you don&#x2019;t like.</li><li><strong>Don&#x2019;t pour oil into the dispenser, spray arms, or directly onto plastic seals.</strong> Oils are concentrated - poured straight in they can leave residue or affect machine parts over time.</li><li><strong>Avoid heavy use:</strong> frequent large doses could leave residue on glasses or cutlery; if that happens, reduce the drops or stop using oils.</li><li><strong>Test fragile items:</strong> if washing delicate glassware or porous items, consider removing them for the scented cycle or skip oils that day.</li><li><strong>Keep oils away from children &amp; pets</strong> and store them safely.</li></ul><h2 id="will-it-affect-cleaning">Will it affect cleaning?</h2><p>Used sparingly (1-2 drops) the oil should not affect detergency for most loads. If you notice visible residue or scents you don&#x2019;t like, reduce the amount or stop using oils.</p><h2 id="can-i-use-any-essential-oil">Can I use any essential oil?</h2><dl><dd><span style="font-size: 16px;">Stick to Koh essential oils.</span></dd></dl>

Can you use Essential Oils with Dishwashing Tablets?

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.

How to Koh

Home

Shop

Why Koh

Get Started

Koh AU

Learn all about Dishwashing Tablets: septic-safe, biodegradable PVA film, no-plastic packaging, and enzyme-boosted cleaning power for spotless, eco-friendly shine.

Dishwashing Tablets

Kitchen products 🍽️

Got questions about Dishwashing Tablets? 🍽️✨ From septic-safe sparkle to plastic-free PVA film and powerhouse enzymes, we’ve got you covered!

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 Universal Cleaner safe to use on chopping boards?

Is Universal Cleaner fragrance-free?

What Certifications does the Universal Cleaner have?

Is Universal Cleaner pet-friendly?

Is Universal Cleaner asthma friendly?

Is Universal Cleaner allergy friendly?

Can I use Universal Cleaner on polished marble?

How to clean TV, monitor & laptop screen

Can I use Universal Cleaner in a robot vacuum or mop?

Is Universal Cleaner being replaced?

Is Universal Cleaner vegan?

Can I use Universal Cleaner on wool carpet?

Universal Cleaner

Surface products 🪞

Are Loo Cleaner Tablets safe for septic environments?

How to use Loo Cleaner Tabs

Do Loo Cleaner Tabs have a fragrance?

Should I remove the wrapper on the Loo Cleaner Tab?

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?

Can I use Bathroom & Shower Cleaner beyond the bathroom?

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 Bathroom & Shower Cleaner "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?

Is Bathroom & Shower Cleaner safe for polished stone?

Bathroom & Shower Cleaner

Bathroom products 🚿

Does Dishwashing Liquid kill bacteria?

Where is Dishwashing Liquid made?

Can I use 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?

How many pumps of Dishwashing Liquid should I use in a full sink?

Can I use Dishwashing Liquid as hand wash?

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 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?

How does this fit into the Koh system?

What's in Kitchen Grease & Oil Cleaner?

How exactly do I use it?

Is Kitchen Grease & Oil Cleaner safe for septic and greywater systems?

Kitchen Grease & Oil Cleaner

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

Universal Dish Spray

Laundry dosing by wash size (Sheets vs Liquid)

Why we split Laundry Liquid & Stain Remover (and what changed)

The laundry Stain Removal Guide

How to keep your whites bright with Koh

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?

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 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?

Can I use Koh Sensitive Laundry Liquid for both white and coloured laundry?

Can I find Sensitive Laundry Liquid at Woolworths/retailers/shops?

How much should I use per load of laundry? (dosage)

Is Sensitive Laundry Liquid compatible with Auto-dosing machines?

Sensitive Laundry Liquid

How do I use Sensitive Laundry Sheets?

Are Sensitive Laundry Sheets safe for front loaders, top loaders and HE machines?

Do Sensitive Laundry Sheets dissolve in cold water?

What if Sensitive Laundry Sheets don't dissolve or leaves residue?

Can I use Sensitive Laundry Sheets for handwashing delicates?

Are Sensitive Laundry Sheets safe for septic tanks and greywater systems?

How should I store Sensitive Laundry Sheets and how do I dispose of the packaging?