Thetford Duo Tank Cleaner Concentrated 0.8L
Deep Clean & Maintain Your Caravan Toilet System
Keep your caravan or motorhome toilet system fresh, hygienic, and performing at its best with the Thetford Duo Tank Cleaner Concentrated 0.8L.
 
Specially formulated to clean both the waste holding tank and grey water tank, this powerful cleaner removes limescale, grease, and build-up without damaging internal components.
 
Perfect for regular maintenance or a deep clean after extended use, it helps extend the life of your system while eliminating unpleasant odours.
 
💧 Powerful Dual Tank Cleaning
Unlike standard cleaners, Thetford Duo Tank Cleaner is designed to clean both waste and grey water tanks, breaking down stubborn deposits and restoring performance.
 
🧼 Deep Cleaning Without Damage
The concentrated formula:
Removes limescale and residue
Breaks down grease and organic build-up
Cleans seals and internal components safely
Helps prevent odours at the source
 
🚐 Ideal for Caravan, Motorhome & Campervan Use
Whether you’re touring regularly or preparing your van for the season, this cleaner is an essential part of your maintenance routine.
 
🧰 How to Get the Best Results
For a complete step-by-step cleaning routine, see our full guide:
👉 The Ultimate Guide to Cleaning Your Thetford Waste Tank Cassette (2026 UK Guide)
 
This guide shows you exactly how to clean, maintain, and prevent common issues with your cassette system.
 
⭐ Key Features
Cleans waste tank & grey water tank
Removes limescale, grease & deposits
Safe for seals and internal parts
Concentrated formula for effective cleaning
Helps eliminate odours
Easy to use
 
📦 Product Details
Size: 0.8L
Type: Concentrated cleaner
Use: Periodic deep cleaning
 
💡 Why It Matters
 
Regular tank cleaning isn’t just about smell — it:
Improves toilet performance
Prevents sensor issues
Extends the lifespan of your system
Keeps your caravan hygienic and ready to use
 
FAQs
How often should I use Thetford Duo Tank Cleaner?
For best results, use 2–3 times per year or after heavy use.
 
Can this be used in both tanks?
Yes, it’s specifically designed for both waste and grey water tanks.
 
Does it remove odours?
Yes, it removes the build-up that causes bad smells.
 
Is it safe for seals?
Yes, the formula is designed to clean without damaging rubber seals or components.