Do I need rinse aid with Dishwashing Tablets?Updated 14 days 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 (especially plastics) coming out wet. Hard-water areas benefit most.
Do I need rinse aid?
✓ Not required, but 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.
⚠ 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.
How do I add rinse aid?
✓ Three-step add
Find the reservoir. Next to the detergent compartment, usually marked with a snowflake or star icon. Pop the cap.
Fill to the max line. Any standard supermarket rinse aid works, no special formula needed.
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.
Dishwashing Tabs · 50pk
10 ingredients, GECA eco-certified, fragrance-free. Septic and grey water safe. PVA film stays on, no unwrapping needed.
New at Koh?
A 50pk lasts about 2 months for a standard household. Drop one in the dispenser, run your usual cycle, no unwrapping needed.
Koh Perks · earn points on every order
Join 40,000+ Koh Perks members. Earn points on every purchase, refer a friend, and redeem for discounts on your next order. Find all the ways to save in one place.
Browse all Dishwashing Tabs articles
Last reviewed: April 2026
Chat with ROS-E
ROS-E handles most questions in seconds, 24/7.
Prefer a human? Just ask. If ROS-E can't answer, the rest of our team will step in. We usually reply within 1 to 2 business days.