Thetford Duo Tank Cleaner Concentrated is a powerful cleaner designed for both waste holding tanks and grey water tanks. It effectively removes scale, encrustations, and grease deposits, helping restore system performance while leaving a fresh citrus fragrance. For best results, use 2-3 times per year as part of regular tank maintenance.
Usage Guide:
4 cleanings of the waste-holding tank (4 200ml)
OR 1 cleaning of the waste-holding tank (200ml) + 1 cleaning of the grey water tank (600ml)
Recommended use: 2-3 times per year