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Do I need rinse aid with Dishwashing Tablets?Updated a day ago

TL;DR: No, but it can help in some situations. Dishwashing Tabs are designed to clean effectively without rinse aid. Add rinse aid if you're seeing water spots on glassware, cloudy residue, or dishes coming out wet, especially plastics. Hard-water areas benefit most.

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Koh Dishwashing Tabs
Glassware before and after a wash with Koh Dishwashing Tabs

Do I need rinse aid?

No. Koh Dishwashing Tabs are designed to clean effectively without rinse aid. Some dishwashers and water types benefit from it though. Add rinse aid if dishes are coming out with water marks, cloudy glassware, or not drying well, particularly with plastic-heavy loads. Hard-water areas benefit most, because mineral-rich water leaves more deposits without rinse aid to help water sheet off cleanly.

✓ Not required, but it can help

Dishwashing Tabs are designed to work without rinse aid. Some dishwashers and water types benefit from it though. Adding rinse aid can lift results if dishes show water marks, cloudy glassware, or aren't drying well.

Optional Lifts drying

⚠ When rinse aid helps most

Hard-water areas where mineral-rich water leaves deposits. Dishwashers that struggle with drying. Loads with lots of plastic items, which hold water droplets more than glass or ceramic.

Hard water Drying issues Water spots Plastic items

How do I add rinse aid?

Most dishwashers have a rinse-aid reservoir next to the detergent compartment, often marked with a snowflake or star icon. Open the cap, fill to the max line, and close it. Rinse aid releases automatically during the rinse cycle. A full reservoir typically lasts 1 to 3 months depending on use, and most dishwashers have an indicator light or window showing when it's running low. Use any standard supermarket rinse aid, no special formula needed.

✓ Three-step add

1

Find the reservoir. Next to the detergent compartment, usually marked with a snowflake or star icon. Pop the cap.

2

Fill to the max line. Any standard supermarket rinse aid works, no special formula needed.

3

Close the cap. That's it. Rinse aid releases automatically during the rinse cycle. A full reservoir lasts 1 to 3 months. Watch for the low-level indicator on most dishwashers.

Koh Dishwashing Tabs

Dishwashing Tabs

Around 2 months in an average home. 10 ingredients, two enzymes, each tab sealed in water-soluble PVA film. GECA certified, Sensitive Choice approved.

No loose powder to handle
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Dish Starter Kit brings the dishwashing line-up together in one box. A tidy way to start if you have not tried Koh before.

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Last reviewed: September 2026 · Koh Australia

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