Thetford Duo Tank Cleaner Concentrate 780ml

This Duo Tank Cleaner has been specially developed to remove even the most stubborn calcium deposits and severe scaling with the utmost of ease.

The new concentrated formula is designed for use on both Waste Cassettes and grey water tanks.

Product Usage:
Use in the waste holding-tank ,

• 1. Add 200ml to the empty tank  
• 2. Add 5L of luke warm water
• 3. Shake tank vigorousley

Use in the grey water tank:

• 1. Add 600ml to the empty tank via the sink or shower drain
• 2. Add 50L of luke warm water
• 3. Drive with your RV for at least 1h, in order to cover all surfaces of the tank

For both tanks: Empty after at least 16 hours at a designated location